14 Best Compostable Trash Bags That Are Eco-Friendly and Reliable

UNNI’s 13-gallon, 200-count, 0.9-mil bags are my best overall pick for kitchen-can users who want a larger supply and a thicker listed gauge. For countertop scraps, UNNI’s 3-gallon bags offer a practical bin size, while SUPERBIO’s 1.6-gallon handle-tie bags suit smaller daily collections. The main tradeoffs are capacity, closure style, bag thickness, and how many bags come in a pack; compostable labeling alone does not tell you whether a bag fits your bin or local composting rules. Read on for the full comparison and guidance on choosing a size and format that matches your routine.

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Key Takeaways

• The largest listed capacity is not always the best fit: the 13-gallon options suit tall kitchen cans, while the 1.6-, 2.6-, and 3-gallon bags target food-scrap bins.
• UNNI’s 13-gallon, 200-count option stands apart by listed thickness: at 0.9 mil, it is thicker on paper than the 0.71-mil UNNI 2.6-gallon options, though fit and handling still matter.
• Closure style changes the routine: the lineup includes drawstring, tie-handle, and bags without a specified closure, so buyers should match the top to how they carry and close waste.
• Pack count varies widely within similar sizes: the 13-gallon selection ranges from 30 to 200 bags, while small-bin options range from 50 to 200, making replenishment frequency a key difference.
• Several options are close size or brand alternatives: UNNI offers 2.6- and 3-gallon bags in multiple counts, so bin dimensions and preferred restocking cadence help break ties.

Our Top Compostable Trash Bags Picks

SUPERBIO 1.6-Gallon Compostable Food Scrap Bags, Handle Tie, 50 Count		Best for Secure Ties	Capacity: 1.6 gallons (6 liters)	Dimensions: 16.1 x 19.3 inches	Thickness: 0.63 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI 2.6-Gallon Compostable Bags, 200 Count, 0.71 Mil		Best Bulk Pick for Small Bins	Capacity: 2.6 gallons (9.84 liters)	Count: 200 bags	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI 3 Gallon Compostable Bags for Countertop Bin, 200 Count, 0.71 Mil		Best for Larger Countertop Bins	Capacity: 3 gallons (11.35 liters)	Bag dimensions: 16.9 x 17.7 inches	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown
1.6-Gallon Compostable Food Scrap Bags with Tie Handles, 120 Count		Best Small-Bag Supply	Capacity: 1.6 gallons	Dimensions: 28 x (13.8 + 4.7) inches	Thickness: 0.7 mil	VIEW ON AMAZON	See Our Full Breakdown
SUPERBIO 13 Gallon Compostable Drawstring Kitchen Waste Bags, 30 Count		Best Large-Bin Drawstring Pick	Capacity: 13 gallons (49.2 liters)	Bag size: 25.2 x 25.6 inches	Thickness: 1 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Kitchen Bags, 13 Gallon, 50 Count		Best for Home Composting	Capacity: 13 gallons (49.2 liters)	Bag dimensions: 23.75 x 31.49 inches	Thickness: 0.9 mil	VIEW ON AMAZON	See Our Full Breakdown
BioBag 2.6 Gallon Compostable Food Scrap Bags, 100 Count		Best for Countertop Scrap Pails	Capacity: 2.6 gallons	Dimensions: 16 x 17 inches	Thickness: 0.64 mil	VIEW ON AMAZON	See Our Full Breakdown
FORID 13 Gallon Compostable Trash Bags, 80 Count, Unscented Tall Kitchen Garbage Can Liners		Best for Sorting Kitchen Waste	Capacity: 13 gallons (55 liters)	Count: 80 bags across 5 rolls	Dimensions: 24.8 x 31.4 inches	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Kitchen Bags, 13 Gallon, 200 Count, 0.9 Mil		Best Bulk Pack	Capacity: 13 gallons (49.2 liters)	Count: 200 bags	Rolls: 4 rolls of 50	VIEW ON AMAZON	See Our Full Breakdown
Compostable Kitchen Trash Bags, 13 Gallon, 32 Count		Best for Narrow Tall Bins	Capacity: 13 gallons (49.2 liters)	Bag dimensions: 22.6 x 33.6 inches	Thickness: 0.87 mil	VIEW ON AMAZON	See Our Full Breakdown
Simply Bio 13 Gallon Compostable Drawstring Trash Bags, 30 Count		Best for Heavy Kitchen Loads	Capacity: 13 gallons (49.21 liters)	Count: 30 bags	Thickness: 1 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI Compostable Tall Kitchen Bags, 13 Gallon, 100 Count		Best for a Larger Household Supply	Capacity: 13 gallons (49.2 liters)	Count: 100 bags (2 rolls of 50)	Dimensions: 23.75 x 31.49 inches	VIEW ON AMAZON	See Our Full Breakdown
UNNI 3-Gallon Compostable Bags for Countertop Bins, 100 Count		Best for Standard Countertop Bins	Capacity: 3 gallons (11.35 liters)	Dimensions: 16.9 x 17.7 inches	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown
UNNI 2.6-Gallon Compostable Bags, 100 Count, 0.71 Mil		Best for Smaller Countertop Bins	Capacity: 2.6 gallons (9.84 liters)	Dimensions: 16.3 x 16.5 inches	Thickness: 0.71 mil	VIEW ON AMAZON	See Our Full Breakdown

More Details on Our Top Picks

1. SUPERBIO 1.6-Gallon Compostable Food Scrap Bags, Handle Tie, 50 Count

   

   Best for Secure Ties

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   For cooks who want a small scrap liner that can be tied shut before carrying it to compost, this 1.6-gallon bag has a useful edge: its handle ties close the opening, and the reinforced star-sealed bottom is designed to support heavier scraps. It carries certifications for both home and commercial composting, a broader set of disposal options than the industrial-composting-only SUPERBIO 13 Gallon Drawstring Kitchen Waste Bags. The tradeoff is the 50-bag supply, which runs out sooner than the 120-count 1.6-gallon option in this lineup. Filled bags should be disposed of within three days, and compost collection depends on local access. I’d choose it for a compact bin where secure carrying matters more than a long-lasting stock.

   Pros:

   • Certified for home and commercial composting
   • Handle ties help close and carry the bag
   • Reinforced star-sealed bottom is designed for heavier scraps
   • Compact 1.6-gallon size suits small food-scrap bins

   Cons:

   • Only 50 bags per roll, fewer than the 120-count small-bag option
   • Filled bags should be disposed of within three days
   • Commercial composting access varies by location

   Best for: Cooks with a small countertop scrap bin who want tie handles and home-composting certification.

   Not ideal for: Households that need a long-lasting bulk supply or cannot dispose of filled bags within three days.

   • Capacity:1.6 gallons (6 liters)
   • Dimensions:16.1 x 19.3 inches
   • Thickness:0.63 mil
   • Quantity:50 bags per roll
   • Material:Compostable plant-based bioplastic
   • Certifications:BPI, OK compost HOME, TÜV SEEDLING; ASTM D6400 and EN 13432
   • Features:Handle tie; reinforced star-sealed bottom
   • Storage and shelf life:Cool, dry place; approximately 1 year
   Our verdict

   “Choose this for a small scrap bin when secure handle ties and home-composting certification matter more than pack size.”

   → See it on Amazon →

2. UNNI 2.6-Gallon Compostable Bags, 200 Count, 0.71 Mil

   

   Best Bulk Pick for Small Bins

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   If you use a small countertop bin every day, this UNNI pack prioritizes fewer replacements: 200 bags in a 2.6-gallon size. Its 0.71 mil thickness is greater than the 0.63 mil SUPERBIO 1.6-Gallon bags, which may suit routine handling of kitchen scraps, though the listed details don’t establish a direct strength comparison in use. The smaller capacity also limits how much can build up before you take the bag out. Certifications include BPI, CMA, and OK compost HOME, plus ASTM D6400, while the 3-gallon UNNI option offers more capacity for bins that can accommodate it. This is a practical fit for someone committed to a compact bin; skip it if you need a larger kitchen liner or tie handles, which are not listed.

   Pros:

   • 200 bags provide a substantial supply
   • 0.71 mil thickness is specified
   • Certified to ASTM D6400, BPI, CMA, and OK compost HOME
   • Unscented material suits food-scrap collection

   Cons:

   • Designed for small countertop bins, limiting capacity
   • No closure feature is specified
   • Listed dimensions describe the package rather than the bag

   Best for: People who empty a 2.6-gallon countertop compost bin often and want a 200-bag supply.

   Not ideal for: Households with larger bins or buyers who need a specified closure such as tie handles.

   • Capacity:2.6 gallons (9.84 liters)
   • Count:200 bags
   • Thickness:0.71 mil
   • Material:Compostable
   • Scent:Unscented
   • Certifications:ASTM D6400, BPI, CMA, OK compost HOME
   • Package dimensions:9 x 5 x 5 inches
   • Item weight:3.5 pounds
   Our verdict

   “Pick this pack for steady use in a 2.6-gallon countertop bin when bulk quantity matters more than extra capacity.”

   → See it on Amazon →

3. UNNI 3 Gallon Compostable Bags for Countertop Bin, 200 Count, 0.71 Mil

   

   Best for Larger Countertop Bins

   View on Amazon

   Among the small-bin choices here, this UNNI bag gives you the most stated capacity: 3 gallons, compared with 2.6 gallons for the UNNI 2.6-Gallon Compostable Bags. That extra room can mean fewer bag changes if your countertop bin fits the larger liner. It also has the same listed 0.71 mil thickness and a 200-count supply, so the choice is mainly about bin fit rather than pack size. Certifications cover BPI under ASTM D6400, CMA, and OK compost HOME. Its stated use window of nine months is shorter than the approximately one-year shelf life listed for the SUPERBIO 1.6-gallon bags, so it suits regular use better than long-term stocking. Commercial composting access may also vary by location.

   Pros:

   • 3-gallon capacity exceeds the listed 2.6-gallon UNNI alternative
   • 200 bags split across two rolls
   • 0.71 mil thickness is specified
   • Certifications include BPI, CMA, and OK compost HOME

   Cons:

   • Use within nine months for best performance
   • Larger capacity may not fit smaller countertop bins
   • Commercial composting access varies by location

   Best for: Regular cooks with a 3-gallon countertop bin who want a larger liner and a 200-bag supply.

   Not ideal for: People who buy bags far ahead or whose countertop bin is sized for 2.6-gallon liners.

   • Capacity:3 gallons (11.35 liters)
   • Bag dimensions:16.9 x 17.7 inches
   • Thickness:0.71 mil
   • Count:200 bags (2 rolls of 100)
   • Material:Plant-based materials
   • Certifications:BPI (ASTM D6400), CMA, OK compost HOME (TÜV AUSTRIA)
   • Recommended use window:Within 9 months of purchase
   Our verdict

   “Choose this for frequent food-scrap collection if your countertop bin fits a 3-gallon bag and you will use the pack within nine months.”

   → See it on Amazon →

4. 1.6-Gallon Compostable Food Scrap Bags with Tie Handles, 120 Count

   

   Best Small-Bag Supply

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   This is the more practical stock-up choice for households set on a 1.6-gallon liner: its 120 bags exceed the 50 in the SUPERBIO 1.6-Gallon Compostable Food Scrap Bags. Both have tie handles, while this option lists a 0.7 mil thickness and a corn starch and PBAT material blend. Its certifications name EN 13432 and ASTM D6400; the SUPERBIO bag provides more specific home and commercial certification labels, so buyers who need those labels should compare local collection requirements. Storage needs attention: keep these bags cool, dark, and dry, away from sunlight, heat, and steam. The stated use period is up to 18 months. Choose this when pack size and tie handles are the priority, provided the storage conditions work for your kitchen.

   Pros:

   • 120 bags provide more stock than the 50-count SUPERBIO small-bag option
   • Tie handles help close bags for carrying
   • 0.7 mil thickness is specified
   • Certified to EN 13432 and ASTM D6400

   Cons:

   • Requires cool, dark, dry storage away from sunlight, heat, and steam
   • Recommended use period is limited to 18 months
   • Description does not specify separate home and industrial certification labels

   Best for: Households with a small food-scrap bin that want tie handles and a 120-bag supply.

   Not ideal for: Buyers who need explicit home-composting certification labels or cannot store bags away from heat, light, and moisture.

   • Capacity:1.6 gallons
   • Dimensions:28 x (13.8 + 4.7) inches
   • Thickness:0.7 mil
   • Quantity:120 bags
   • Material:Corn starch and PBAT
   • Certifications:EN 13432 and ASTM D6400
   • Storage:Cool, dark, dry place; keep away from sunlight, heat, and steam
   • Recommended use period:Within 18 months of purchase
   Our verdict

   “Pick this for a small kitchen scrap bin when you want tie handles and more bags per pack, and can store them carefully.”

   → See it on Amazon →

5. SUPERBIO 13 Gallon Compostable Drawstring Kitchen Waste Bags, 30 Count

   

   Best Large-Bin Drawstring Pick

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   For replacing a conventional kitchen-bin liner with a compostable option, this SUPERBIO bag offers a 13-gallon capacity and drawstring closure, unlike the smaller UNNI countertop bags, which are designed for food scraps in compact bins. The 1 mil thickness and tear-resistant description suit a larger load, while the drawstring helps gather the opening for carrying. Its listed certifications point to commercial or industrial composting, including BPI and OK compost INDUSTRIAL; the small SUPERBIO 1.6-gallon bag also lists OK compost HOME, so buyers relying on home composting should not assume this one qualifies. There are only 30 bags in the roll, and organic waste should be disposed of within three days. This pick makes sense where a commercial composting route is available.

   Pros:

   • 13-gallon capacity fits larger kitchen waste collection
   • Drawstring closure gathers the bag for carrying
   • 1 mil thickness and tear-resistant design are specified
   • Certifications include BPI, OK compost INDUSTRIAL, ASTM D6400, and EN 13432

   Cons:

   • Certification details specify industrial composting rather than home composting
   • Only 30 bags per roll
   • Filled bags holding organic waste should be disposed of within three days

   Best for: Households with a 13-gallon kitchen bin and access to a commercial composting program that accepts certified bags.

   Not ideal for: Home composters without commercial collection, or anyone who needs a larger pack or long storage window.

   • Capacity:13 gallons (49.2 liters)
   • Bag size:25.2 x 25.6 inches
   • Thickness:1 mil
   • Count:30 bags per roll
   • Material:Plant-based
   • Closure:Drawstring
   • Scent:Unscented
   • Certifications:BPI Compostable, OK compost INDUSTRIAL, SEEDLING, ASTM D6400, EN 13432
   • Shelf life:Approximately 1 year
   Our verdict

   “Choose this large drawstring bag if your kitchen bin is 13 gallons and a local commercial composting program accepts it.”

   → See it on Amazon →

6. UNNI Compostable Kitchen Bags, 13 Gallon, 50 Count

   

   Best for Home Composting

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   Home composting compatibility is the clearest reason to choose this UNNI size: its BPI, CMA, and OK compost HOME certifications set it apart from options in this group that list commercial composting standards only. The 13-gallon capacity and 23.75-by-31.49-inch dimensions suit many tall kitchen bins, while 0.9 mil thickness is aimed at routine food scraps and household waste. Compared with the 200-count UNNI pack, this one takes less storage space and may suit households that want to avoid holding a large supply of compostable bags. The tradeoff is a shorter recommended use window: store it cool and dry, and use it within nine months for best performance. Composting access still depends on local programs and facilities.

   Pros:

   • OK compost HOME certification alongside BPI and CMA
   • 13-gallon capacity suits many tall kitchen cans
   • 0.9 mil thickness is suited to everyday scraps
   • 50-count pack is more manageable to store than a bulk pack

   Cons:

   • Best performance is specified within nine months
   • Local composting services may not accept compostable bags

   Best for: Households with a tall kitchen bin that compost at home and want a moderate-size supply.

   Not ideal for: Buyers seeking a large stock-up pack or people whose local composting service does not accept these bags.

   • Capacity:13 gallons (49.2 liters)
   • Bag dimensions:23.75 x 31.49 inches
   • Thickness:0.9 mil
   • Count:50 bags
   • Material:Compostable, plant-based materials
   • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
   • Scent:Unscented
   • Storage guidance:Store cool and dry; use within nine months for best performance
   Our verdict

   “Choose this UNNI pack if home composting certification and a moderate supply matter more than bulk quantity.”

   → See it on Amazon →

7. BioBag 2.6 Gallon Compostable Food Scrap Bags, 100 Count

   

   Best for Countertop Scrap Pails

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   For a countertop pail, breathability is the defining advantage of these BioBag liners: moisture can evaporate, which may help limit dampness and odors between trips to the compost bin. At 2.6 gallons and 16 by 17 inches, they serve a different job from the 13-gallon UNNI bags, which line tall kitchen cans but are oversized for most food-scrap pails. BioBag lists compatibility with most countertop bins and backyard systems, and its BPI certification and ASTM D6400 standard speak to composting requirements. The practical catch is frequent turnover: the bags should be changed every three to five days to limit condensation. Their 0.64 mil thickness also makes them a liner for scraps, not a bag for heavy loads or long-term storage.

   Pros:

   • Breathable construction can help moisture evaporate
   • 2.6-gallon size fits most countertop compost pails
   • BPI certified and meets ASTM D6400
   • 100-count pack provides a steady supply for frequent changes

   Cons:

   • Needs changing every three to five days to limit condensation
   • 0.64 mil thickness is not suited to heavy loads or reuse
   • Should be used within one year of purchase

   Best for: Home cooks who collect food scraps in a countertop compost pail and empty it every few days.

   Not ideal for: People who want one liner to last a week or more, or need a bag for bulky household trash.

   • Capacity:2.6 gallons
   • Dimensions:16 x 17 inches
   • Thickness:0.64 mil
   • Count:100 bags
   • Material:Plant starches, vegetable oils, and compostable polymers
   • Certification:BPI certified; meets ASTM D6400
   • Compatibility:Most kitchen compost pails and bins; backyard compost systems
   • Origin:Made in USA with imported resin from Italy
   Our verdict

   “Pick BioBag for a countertop scrap pail if you can change the liner every few days.”

   → See it on Amazon →

8. FORID 13 Gallon Compostable Trash Bags, 80 Count, Unscented Tall Kitchen Garbage Can Liners

   

   Best for Sorting Kitchen Waste

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   Clear green bags give this FORID pack a practical role for households that separate kitchen waste and want the liner to be easy to identify. Its 13-gallon capacity and 24.8-by-31.4-inch dimensions are close to the tall-kitchen format of the UNNI 50-count bags, while the octagonal bottom seal is specified to hold up to 83 pounds. That load figure is a stated capacity, not a reason to treat compostable film like conventional heavy-duty plastic. FORID lists ASTM D6400 and EN 13432 standards, but unlike the smaller BioBag countertop liners, these bags are intended for larger cans and multipurpose household use. PSM material may be less durable than traditional plastic under heavy loads, and heat or humidity in storage can degrade compostable bags.

   Pros:

   • 13-gallon size fits many tall kitchen bins
   • Octagonal bottom seal is specified for loads up to 83 pounds
   • ASTM D6400 and EN 13432 certifications are listed
   • Clear green color helps distinguish the contents for sorting

   Cons:

   • May be less durable than traditional plastic under heavy loads
   • Compostable material can degrade with prolonged storage or humidity
   • Bin fit is limited by the listed size and shape measurements

   Best for: Households sorting kitchen waste in a tall bin that want green-tinted liners and a stated load capacity.

   Not ideal for: People who routinely carry heavy, wet trash or store bags in humid conditions for extended periods.

   • Capacity:13 gallons (55 liters)
   • Count:80 bags across 5 rolls
   • Dimensions:24.8 x 31.4 inches
   • Material:Plant Starch Material (PSM)
   • Certifications:ASTM D6400, EN 13432
   • Load capacity:Up to 83 pounds (38 kg)
   • Color:Clear green
   • Scent:Unscented
   Our verdict

   “Choose FORID if visible waste sorting and a reinforced seal matter more than traditional-plastic toughness.”

   → See it on Amazon →

9. UNNI Compostable Kitchen Bags, 13 Gallon, 200 Count, 0.9 Mil

   

   Best Bulk Pack

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   The 200-bag supply makes this UNNI pack the straightforward choice for households that use compostable liners daily and have room to store them. Each bag has the same 13-gallon capacity, 0.9 mil thickness, and 23.75-by-31.49-inch dimensions as the UNNI 50-count option, so the key difference is quantity rather than fit. Its BPI, CMA, and OK compost HOME certifications also give it a broader listed composting profile than FORID, which lists ASTM D6400 and EN 13432. That larger supply comes with a storage constraint: UNNI recommends a cool, dry place and use within nine months for best performance. Buyers with light usage may find it harder to work through the pack in that window, while households with frequent food scraps can make better use of the quantity.

   Pros:

   • 200 bags across four rolls of 50
   • 13-gallon size and 0.9 mil thickness suit routine kitchen waste
   • BPI, CMA, and OK compost HOME certifications
   • Plant-starch material

   Cons:

   • Use within nine months is recommended for best performance
   • Bulk quantity requires dry storage and regular use
   • Local composting services may not accept compostable bags

   Best for: Busy households that line a tall kitchen bin frequently and can store the rolls in a cool, dry place.

   Not ideal for: Low-volume households that may not use 200 bags within nine months or lack dry storage space.

   • Capacity:13 gallons (49.2 liters)
   • Count:200 bags
   • Rolls:4 rolls of 50
   • Dimensions:23.75 x 31.49 inches per bag
   • Thickness:0.9 mil
   • Material:Plant starches
   • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
   • Storage guidance:Store cool and dry; use within nine months for best performance
   Our verdict

   “Choose the 200-count UNNI pack if you use tall kitchen liners often enough to finish it within the recommended storage window.”

   → See it on Amazon →

10. Compostable Kitchen Trash Bags, 13 Gallon, 32 Count

    

    Best for Narrow Tall Bins

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    Longer bag dimensions distinguish this 13-gallon option: at 22.6 by 33.6 inches, it may suit tall, narrower cans better than the wider 24.8-by-31.4-inch FORID bags, depending on the bin opening and height. The 0.87 mil thickness is close to the 0.9 mil UNNI bags, making this a comparable option for everyday kitchen scraps by stated thickness. Its Seedling certification and plant-based material support its compostable positioning, though buyers should check which facilities accept the bags. A 32-count supply is smaller than either UNNI pack, which can be useful for limited storage or occasional use. The main constraint is the six-month recommended use window, shorter than UNNI’s nine months, so this is a poor fit for slow users who keep spare rolls for a long time.

    Pros:

    • 33.6-inch length may suit taller cans
    • 0.87 mil thickness is close to the 0.9 mil UNNI bags
    • Plant-based materials and Seedling compostable certification
    • 32-count quantity takes less storage space than bulk packs

    Cons:

    • Recommended use window is six months
    • Seedling certification may not match local composting facility requirements
    • Capacity and dimensions should be checked against the specific bin

    Best for: People with tall, relatively narrow kitchen cans who want a smaller supply of compostable liners.

    Not ideal for: Low-use households that keep bags for many months, or buyers seeking home-compost certification.

    • Capacity:13 gallons (49.2 liters)
    • Bag dimensions:22.6 x 33.6 inches
    • Thickness:0.87 mil
    • Quantity:32 bags per roll
    • Material:Plant-based materials
    • Certification:Seedling certified compostable
    • Storage guidance:Store cool and dry; use within six months
    Our verdict

    “Consider this pack for a tall, narrow bin if its dimensions fit and you will use the bags within six months.”

    → See it on Amazon →

11. Simply Bio 13 Gallon Compostable Drawstring Trash Bags, 30 Count

    

    Best for Heavy Kitchen Loads

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    Simply Bio pairs a 1 mil thickness with drawstring closures, giving it a sturdier, easier-to-carry feel than the thinner UNNI Compostable Tall Kitchen Bags at 0.9 mil. That difference may suit households that put wet food scraps in a full-size bin and want a closure they can cinch before carrying. Its listed certifications cover both home and industrial composting, though the right disposal route still depends on local facilities and conditions. The tradeoff is quantity: 30 bags run out sooner than UNNI’s 100-count pack, so this is a less practical pick for frequent bag changes or high-volume kitchens. I’d choose it for its thicker construction and drawstring convenience, while buyers prioritizing a larger supply should compare the UNNI pack.

    Pros:

    • 1 mil thickness offers more material than the 0.9 mil UNNI tall kitchen bags
    • Drawstring closure helps cinch and carry a filled bag
    • Listed certifications include home and industrial composting standards
    • 13-gallon capacity fits many full-size kitchen bins

    Cons:

    • 30 bags provide a smaller supply than UNNI’s 100-count tall kitchen pack
    • Composting depends on suitable conditions and local access

    Best for: Households with full-size kitchen bins that regularly carry heavy or damp waste and value a drawstring closure.

    Not ideal for: High-volume households seeking a large supply in one pack, or buyers without suitable composting access.

    • Capacity:13 gallons (49.21 liters)
    • Count:30 bags
    • Thickness:1 mil
    • Bag size:23.7 x 29.4 inches
    • Material:PLA and PBAT
    • Closure:Drawstring
    • Color:Green
    • Certifications:ASTM D6400, BPI, OK Compost Home, OK Compost Industrial, Seedling, EN 13432
    Our verdict

    “Choose Simply Bio if a thicker 13-gallon bag and drawstring carry are more useful to you than a larger pack count.”

    → See it on Amazon →

12. UNNI Compostable Tall Kitchen Bags, 13 Gallon, 100 Count

    

    Best for a Larger Household Supply

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    The 100-count pack is the main reason I’d choose this UNNI option: it supplies more than three times as many bags as Simply Bio’s 30-count 13-gallon pack. At 0.9 mil, it is slightly thinner than Simply Bio’s 1 mil construction, which may matter to buyers who routinely carry very heavy, wet loads. For everyday kitchen, bathroom, or office waste, though, the tall-bin fit and multi-organization certifications make this a practical choice for people who want a consistent supply. The care window is a real limitation: the product calls for cool, dry storage and use within nine months for best performance. Home compost certification is listed, while commercial composting access varies by location, so disposal options may be more limited than the label’s broad appeal suggests.

    Pros:

    • 100 bags offer a larger supply than Simply Bio’s 30-count pack
    • 13-gallon size suits many tall kitchen bins
    • Listed certifications include BPI, CMA, and OK compost HOME
    • Designed for kitchen, bathroom, and office bins

    Cons:

    • At 0.9 mil, it is thinner than Simply Bio’s 1 mil bag
    • Best performance calls for cool, dry storage and use within nine months
    • Commercial composting availability varies by location

    Best for: Families or shared households using 13-gallon bins who want a larger supply for regular bag changes.

    Not ideal for: People who need bags for especially heavy loads, prefer thicker construction, or cannot use the pack within nine months.

    • Capacity:13 gallons (49.2 liters)
    • Count:100 bags (2 rolls of 50)
    • Dimensions:23.75 x 31.49 inches
    • Thickness:0.9 mil
    • Material:Plant-based compostable material
    • Color:Green
    • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
    • Recommended use period:Within nine months; store cool and dry
    Our verdict

    “Pick this UNNI pack if you change 13-gallon liners often and value a larger supply over the thicker Simply Bio bag.”

    → See it on Amazon →

13. UNNI 3-Gallon Compostable Bags for Countertop Bins, 100 Count

    

    Best for Standard Countertop Bins

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    UNNI’s 3-gallon size is the straightforward fit for countertop compost bins that are too small for 13-gallon kitchen liners but need more room than the 2.6-gallon UNNI bag. That extra capacity can mean fewer changes for cooks who collect scraps throughout the day. Its 0.71 mil thickness is below the 0.9 mil tall kitchen bag in the same lineup, so I’d reserve it for typical food scraps rather than expect it to handle the same loads as a full-size liner. The 100-count roll offers a steady supply, and the listed certifications include home composting. Like the 2.6-gallon alternative, it calls for use within nine months and suitable storage; buyers should also check whether their composting setup accepts the bag.

    Pros:

    • 3-gallon capacity offers more room than UNNI’s 2.6-gallon option
    • Dimensions are suited to compact countertop bins
    • 100 bags per roll provide a substantial supply
    • Listed certifications include BPI, CMA, and OK compost HOME

    Cons:

    • 0.71 mil thickness is less substantial than the 0.9 mil tall kitchen option
    • Best performance requires cool, dry storage and use within nine months
    • Commercial composting availability varies by area

    Best for: Home cooks with a standard 3-gallon countertop compost bin who collect food scraps daily.

    Not ideal for: People with very small 2.6-gallon bins, full-size kitchen cans, or a need for thicker bags for heavy wet loads.

    • Capacity:3 gallons (11.35 liters)
    • Dimensions:16.9 x 17.7 inches
    • Thickness:0.71 mil
    • Count:100 bags per roll
    • Material:Plant-based materials
    • Certifications:BPI (ASTM D6400), CMA, OK compost HOME by TÜV AUSTRIA
    • Recommended use period:Within nine months
    Our verdict

    “Choose this 3-gallon UNNI roll if your countertop bin needs more capacity than a 2.6-gallon liner can offer.”

    → See it on Amazon →

14. UNNI 2.6-Gallon Compostable Bags, 100 Count, 0.71 Mil

    

    Best for Smaller Countertop Bins

    View on Amazon

    This 2.6-gallon UNNI bag is made for compact bins where a 3-gallon liner may be oversized. It shares the 0.71 mil thickness and 100-bag count of UNNI’s 3-gallon option, but its smaller 16.3 x 16.5-inch dimensions make it a better match for tighter countertop containers. That fit can reduce excess bag material around the rim; the tradeoff is less room for scraps, so cooks who fill a bin quickly may prefer the 3-gallon version. Listed certifications include home composting, and the product recommends cool, dry storage and use within nine months. I’d treat this as a size-specific pick rather than a general kitchen trash bag: its compact capacity is useful only when it matches the bin.

    Pros:

    • 2.6-gallon size suits smaller countertop bins
    • Smaller dimensions distinguish it from UNNI’s 3-gallon bag
    • 100 bags provide a substantial supply
    • Listed certifications include BPI, CMA, and OK compost HOME

    Cons:

    • Less capacity than the 3-gallon UNNI option
    • 0.71 mil thickness is intended for everyday scraps rather than heavy loads
    • Best performance calls for cool, dry storage and use within nine months

    Best for: People with small countertop compost bins who want a close-fitting liner and a 100-bag supply.

    Not ideal for: Households that generate lots of food scraps or own a standard 3-gallon bin that needs more liner capacity.

    • Capacity:2.6 gallons (9.84 liters)
    • Dimensions:16.3 x 16.5 inches
    • Thickness:0.71 mil
    • Count:100 bags
    • Material:Plant-based compostable material
    • Color:Green
    • Certifications:BPI, CMA, OK compost HOME; meets ASTM D6400
    • Recommended use period:Within nine months
    Our verdict

    “Choose this smaller UNNI bag if your countertop bin is sized for 2.6 gallons and the 3-gallon option would be too large.”

    → See it on Amazon →

How We Picked

I ranked these compostable trash bags by how clearly their listed size, closure, thickness, and pack count serve different household routines. Capacity comes first: a kitchen-can liner should fit a tall can, while a food-scrap bag should work in a small countertop or under-sink bin. I gave added weight to useful details such as the 0.9-mil listing on one 13-gallon option and handle ties or drawstrings that affect carrying and closing.

The ranking favors options with a distinct, easy-to-understand use case and enough listed information to compare them. Larger packs may reduce how often a buyer restocks, but count alone does not make a bag a better fit. Where products have similar capacities and specifications, I treat them as close alternatives and prioritize practical differences over brand repetition. Product titles do not establish composting certification, local facility acceptance, or verified strength, so buyers should check those details separately.

Factors to Consider When Choosing Compostable Trash Bags

Choosing a compostable bag starts with the waste and bin you have, then moves to local processing rules and day-to-day handling. These checks can prevent a common mismatch: buying a bag that carries the right label but does not fit the container or the way you dispose of scraps.

Match capacity to the actual bin

Use the bin’s dimensions as well as its stated capacity when choosing a liner. Two containers with similar gallon ratings can differ in height, rim width, and shape, which affects how much bag material hangs over the edge. A bag that is too small may slip inside when loaded; an oversized one can bunch and make scraps harder to transfer. For countertop food scraps, think about how often you empty the bin before choosing between a small liner and a larger capacity. If you are unsure, measure the rim and height and compare them with the bag’s dimensions when available. Capacity labels are a useful starting point, not a guarantee of fit.

Check what your composting service accepts

“Compostable” on a product title does not by itself confirm that your city or hauler accepts the bag. Some collection programs take food scraps only in approved liners, while others require loose scraps or accept only specific certifications. Home composting conditions can differ from commercial facility processes, so a bag may not break down well in every setup. Look up your local program’s accepted materials before buying a large pack. If the service rejects liners, paper or an unlined container may be more practical. Treat the bag label and your local rules as separate checks.

Choose a closure for how you carry waste

Closure features matter most when a bag leaves the bin before it reaches a compost collection point. Handle ties give you a way to gather and carry a small scrap bag, while a drawstring can cinch around a fuller kitchen liner. Bags with no closure detail listed may call for a twist tie or another method. Think about whether you carry scraps through the home, store them briefly, or empty the liner directly into a larger container. A secure closure can help contain loose scraps, but it does not replace a properly fitted bag or careful lifting. Pick the closure that suits your route and load size.

Read thickness as one clue, not a strength guarantee

A listed mil measurement gives a point of comparison, but it does not fully describe tear resistance or leak performance. Bag material, seams, load shape, and moisture all affect how a liner handles real kitchen waste. A thicker specification may appeal if you collect heavier or wetter scraps, while a lighter liner can be adequate for frequent emptying and modest loads. Avoid filling any compostable bag with sharp packaging or heavy, wet waste beyond what its intended use suggests. When product details do not state a tested load limit, plan for cautious handling. Fit and lifting technique matter alongside thickness.

Balance pack count against freshness and use rate

A high-count pack can cut down on repeat purchases, but only if the size works for your bin and the bags remain usable through your normal routine. Estimate how many liners you use in a week, then consider how long a pack will last. A lower-count pack can make sense when trying a new capacity or closure style before committing to a larger quantity. Store unused bags as directed on the package, away from heat, moisture, and prolonged sunlight. Buying more than you need can leave you with a stack that does not suit a changed composting routine. Let expected use, storage, and fit guide the pack size.

Separate compostable claims from plastic-free claims

Compostable and plastic-free are different claims, and packaging may use several material terms that are easy to conflate. Read the full product description and package labeling for the material, certification, and disposal instructions. If avoiding conventional plastic is a priority, verify the material rather than inferring it from the word “compostable.” If breakdown performance is the priority, check which composting conditions and certifications apply. These details matter because a bag suited to one disposal route may not suit another. Choose based on the outcome you need and the rules of your collection system.

Frequently Asked Questions

Can I use the same compostable bag for a countertop bin and a kitchen trash can?

Usually, no: the size difference between a small food-scrap bin and a tall kitchen can makes one liner impractical for both. The lineup’s 1.6-, 2.6-, and 3-gallon bags target smaller containers, while its 13-gallon options are listed for kitchen cans. Check the bag dimensions against the rim and height of each bin, since gallon labels alone do not confirm fit. Also consider the contents: wet food scraps can be heavier than routine dry kitchen waste. Choosing separate sizes helps avoid slipping liners and awkward overhang.

Will my local compost collection accept these bags?

The product titles alone cannot confirm acceptance by your local program. Collection services set their own rules, including which certifications or liner materials they permit. Check the hauler’s accepted-materials list and compare it with the bag’s package or manufacturer information before filling a large supply. Some programs ask households to empty scraps from the liner or avoid liners altogether. If the rules are unclear, contact the service before buying a bulk pack.

Is a thicker bag always the better choice for wet food scraps?

Thickness can help distinguish two listed options, but it does not guarantee leak or tear performance. Seams, material blend, bag fit, and the weight of the scraps also affect handling. The 0.9-mil figure on one UNNI 13-gallon option is a useful listed comparison with the 0.71-mil UNNI small-bag options, but those bags also differ in size and intended use. For wet scraps, avoid letting liquid pool and lift the bag from its base when possible. Check the manufacturer’s guidance for any stated limits.

Should I choose a drawstring bag or one with tie handles?

Choose based on the container and how you move waste. Drawstrings are listed on some 13-gallon kitchen bags and can gather a larger liner around the load. Tie handles appear on small food-scrap bags and give you a simple way to carry a compact bundle. If you empty scraps directly into a collection caddy, closure may matter less than a secure fit. A bag without a closure specified may require a separate tie or a different carrying method.

How do I decide between a 100-count and 200-count pack?

Start with how often you empty the bin and whether you already know the bag fits. A larger pack can suit a household with a steady routine, while a smaller pack is a lower-commitment way to try a new size or closure. In this roundup, the 2.6-gallon UNNI bags are listed in both 100- and 200-count packs, as are some other small-bin formats at differing sizes. Compare capacity and thickness before treating count as the deciding factor. Store the extra bags according to package directions so they remain in suitable condition.

Conclusion

Best overall: I’d start with UNNI’s 13-gallon, 200-count, 0.9-mil option if you need tall kitchen liners and value the thicker listed gauge. Best value by pack size: UNNI’s 2.6-gallon, 200-count bags make sense for regular small-bin use, provided they fit your container. Best for beginners: SUPERBIO’s 1.6-gallon handle-tie bags are a straightforward starting point for modest countertop scrap collection. Best premium-style pick: the 0.9-mil UNNI kitchen bags stand out for buyers who prioritize a thicker listed specification. For a larger countertop bin, choose a 3-gallon option; for a tall can with a drawstring preference, compare SUPERBIO and Simply Bio. Before ordering, confirm dimensions and check whether your composting service accepts the bag material.