Searching for the best compostable trash bags in bulk can feel overwhelming, with options varying widely in size, thickness, and price. The Reli. 13 Gallon Compostable Trash Bags stand out as the best overall pick for their balance of durability and eco-friendliness. The UNNI 2.6 Gallon Compostable Bags are a top choice for smaller spaces, thanks to their compact size and extra thick material. However, the main tradeoffs in this category often involve durability versus cost — thicker bags tend to be more resistant but also more expensive. Keep reading for a full breakdown of the best options to match your specific needs.
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Key Takeaways
- Thicker bags (around 0.9 Mil) generally offer better durability but come at a higher cost per bag.
- Larger sizes like 33 gallons are less common in bulk, often requiring a tradeoff between capacity and eco-friendliness.
- The best bulk options balance cost with sufficient strength to prevent leaks and tears during disposal.
- Some brands offer extra features like leak-proof lining or drawstrings, which can enhance usability but may increase price.
- Size and thickness preferences heavily influence which product is best; smaller households may prefer compact, thinner bags.
| Compostable Trash Bags – 13 Gallon, Unscented, 80 Count, Green |  | Best Overall for Versatility and Eco-Friendliness | Size: 24.8 x 31.4 inches | Capacity: 13 Gallons | Material: Plant starch (biomaterial) | VIEW ON AMAZON | See Our Full Breakdown |
| UNNI 2.6 Gallon Compostable Bags, 100 Count, 10 Liter, Extra Thick 0.71 Mil |  | Best for Small Kitchen Composting Needs | Capacity: 2.6 gallons | Unit Count: 100 | Dimensions: 4.6 x 4.13 x 4.06 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Reli. Compostable 6-8 Gallon Trash Bags | 200 Count Bulk | Green |  | Best for Medium-Size Commercial and Home Use | Capacity: 6-8 gallons | Quantity: 200 | Color: Green | VIEW ON AMAZON | See Our Full Breakdown |
| 13 Gallon Compostable Trash Bags, 100 Count |  | Best for Versatile Indoor and Outdoor Use | Capacity: 13 gallons | Unit Count: 50 bags per roll, 2 rolls | Total Count: 100 | VIEW ON AMAZON | See Our Full Breakdown |
| UNNI Compostable Bags, 13 Gallon, 50 Count, Extra Thick 0.9 Mil |  | Best for Heavy-Duty Kitchen Waste Management | Capacity: 13 gallons | Unit Count: 50 | Item Dimensions: 6.42 x 4.41 x 4.41 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Reli. Compostable 33 Gallon Trash Bags | 40 Count | Green |  | Best for Large-Scale Composting Needs | Capacity: 30-33 gallons | Count: 40 | Material: Plant-based (30%) | VIEW ON AMAZON | See Our Full Breakdown |
| Simply Bio 13 Gallon Compostable Organic Bags Liners Drawstring, Heavy Duty Extra Thick 1 Mil, 49.21 Liter, 30 Bags |  | Best for Heavy-Duty Kitchen Waste | Capacity: 13 gallons | Size: 25.2 in x 25.6 in | Thickness: 1 mil | VIEW ON AMAZON | See Our Full Breakdown |
| 20 Gallon Compostable Trash Bags – 75L Biodegradable Organic Garbage Bags, 100 Count |  | Best for Versatile Household and Yard Waste | Capacity: 75 liters / 20 gallons | Count: 100 | Dimensions: 22.83 x 11.81 x 11.81 inches | VIEW ON AMAZON | See Our Full Breakdown |
| Reli. Compostable 13 Gallon Trash Bags | 150 Count Bulk | Green |  | Best for Bulk Household Waste Management | Capacity: 13 gallons | Count: 150 | Dimensions: 24″x30″ | VIEW ON AMAZON | See Our Full Breakdown |
| Reli. Compostable 33 Gallon Trash Bags | 80 Count, Eco-Friendly, Leak-Proof |  | Best for Heavy-Duty Industrial Composting | Capacity: 33 gallons | Count: 80 | Material: Green Compostable Plastic | VIEW ON AMAZON | See Our Full Breakdown |
| compostable trash bags bulk | Capacity | Material | Dimensions |
|---|---|---|---|
| Compostable Trash Bags | 13 Gallons | Plant starch (biomaterial) | — |
| UNNI 2.6 Gallon Compostable Ba | 2.6 gallons | Compostable | 4.6 x 4.13 x 4.06 inches |
| Reli. Compostable 6-8 Gallon T | 6-8 gallons | Plant-based, compostable plastic | 21" x 23" |
| 13 Gallon Compostable Trash Ba | 13 gallons | Plant starch (corn) material | 24 inches x 30 inches |
| UNNI Compostable Bags | 13 gallons | Plant-based | — |
| Reli. Compostable 33 Gallon Tr | 30-33 gallons | Plant-based (30%) | 33"x39" |
| Simply Bio 13 Gallon Compostab | 13 gallons | Biodegradable, compostable | — |
| 20 Gallon Compostable Trash Ba | 75 liters / 20 gallons | Biodegradable | 22.83 x 11.81 x 11.81 inches |
| Reli. Compostable 13 Gallon Tr | 13 gallons | Green compostable plastic | 24"x30" |
| Reli. Compostable 33 Gallon Tr | 33 gallons | Green Compostable Plastic | 33"x39" |
More Details on Our Top Picks
Compostable Trash Bags – 13 Gallon, Unscented, 80 Count, Green
This set stands out for offering a well-rounded balance of size, durability, and environmental benefits. Made from plant starch, these bags are certified compostable in home composting setups, making them ideal for eco-conscious households. Compared with the UNNI 13 Gallon Bags, they are slightly larger and more versatile, fitting a range of small to medium bins. Their octagonal bottom design enhances strength, reducing leaks, but their size limits them for larger trash cans. They may require specific composting conditions, which could be a hurdle for some users seeking simple disposal. Overall, these bags appeal to those who want a reliable, eco-friendly option that works in multiple settings without sacrificing strength.
Pros:- Eco-friendly and certified for home composting
- Strong, leak-proof design with octagonal bottom
- Suitable for various small bins and multiple environments
Cons:- Size may not fit larger trash cans
- Limited to small bin applications
- Requires specific composting conditions
Best for: Homeowners who want a durable, all-purpose compostable bag for small bins and multiple uses
Not ideal for: Users with larger bins or those seeking bags suitable for industrial composting only
- Size:24.8 x 31.4 inches
- Capacity:13 Gallons
- Material:Plant starch (biomaterial)
- Number of Bags:80
- Color:Green
- Certifications:ASTM D6400, EN 13432
Our verdict“This choice suits eco-conscious households needing a versatile, reliable compostable bag for small-scale use.”
UNNI 2.6 Gallon Compostable Bags, 100 Count, 10 Liter, Extra Thick 0.71 Mil
This product excels for small kitchen compost bins, providing extra thickness at 0.71 mil, ensuring durability against food scraps and daily use. While the UNNI bags are perfect for compact spaces, they are less suited for larger or outdoor bins, unlike the Reli. 6-8 Gallon Bags which are better for bigger capacities. Compared with the Compostable Trash Bags, these are much smaller, which limits their application but makes them ideal for tight spaces. Their durability is a clear advantage, but their limited size means they won’t handle large waste loads. These bags are best for individuals who prioritize sturdy, space-efficient solutions for food scraps and small waste containers.
Pros:- Extra thick at 0.71 mil for durability
- Made from plant-based, compostable materials
- Ideal for small kitchen waste bins
Cons:- Limited capacity restricts use for larger waste loads
- May not be suitable for commercial composting environments
- Use best within 9 months for optimal performance
Best for: Individuals with small kitchen compost bins or limited countertop space
Not ideal for: Users with larger or outdoor trash cans requiring bigger capacity bags
- Capacity:2.6 gallons
- Unit Count:100
- Dimensions:4.6 x 4.13 x 4.06 inches
- Material:Compostable
- Thickness:0.71 mil
- Certifications:Certified compostable
Our verdict“A perfect fit for those seeking sturdy, compact compost bags for small kitchen waste management.”
Reli. Compostable 6-8 Gallon Trash Bags | 200 Count Bulk | Green
This bulk pack is designed for medium-sized bins, offering a generous 200-count supply with tear-resistant, leak-proof construction. Made from 30% plant-based materials, these bags are suitable for eco-friendly waste disposal but may not fully decompose in landfills, similar to the Reli. 13 Gallon Bags. They outperform many plastic bags in terms of environmental credentials, yet depend heavily on proper industrial composting conditions for full breakdown. Compared to the smaller UNNI or 13 Gallon Bags, these are better for larger, daily-use bins, but their plastic content means they won’t fully biodegrade without proper composting. This makes them a great choice for bulk needs where industrial composting facilities are accessible.
Pros:- Large bulk quantity for convenience
- Tear-resistant and leak-proof
- Made from 30% plant-based, compostable materials
Cons:- Plastic component may not decompose fully in landfills
- Performance depends on proper composting environment
- Not suitable for non-compostable waste
Best for: Eco-conscious households with medium-sized compost bins or small-scale commercial use
Not ideal for: People without access to industrial composting or who prefer fully biodegradable options
- Capacity:6-8 gallons
- Quantity:200
- Color:Green
- Dimensions:21″ x 23″
- Material:Plant-based, compostable plastic
- Certification:ASTM-D6400
Our verdict“Ideal for bulk users with access to industrial composting facilities who prioritize eco-friendly bulk options.”
13 Gallon Compostable Trash Bags, 100 Count
This pack offers a solid option for those needing larger capacity, with thickened, double-layer drawstring bags that handle various trash types. Compared with the Reli. 13 Gallon Bags, these feature a more durable, thicker design, making them suitable for outdoor use and handling heavier waste. However, their size restricts use to trash cans with a diameter less than 15.3 inches, and they are limited to compostable waste, unlike some multi-purpose plastic bags. While their certification and thickened design are advantageous, their limited fit makes them less suitable for very large or outdoor bins with bigger openings. This product works well for users prioritizing durability and eco-friendliness in smaller outdoor or indoor bins.
Pros:- Eco-friendly, biodegradable material
- Thickened, leak-resistant design
- Double-layer drawstring for easy tying
Cons:- Limited to trash cans under 15.3 inches diameter
- Only suitable for compostable waste
- Not designed for very large or industrial bins
Best for: Home users needing durable, eco-friendly bags for outdoor or tall kitchen cans
Not ideal for: Users with larger trash cans or requiring bags for non-compostable waste
- Capacity:13 gallons
- Unit Count:50 bags per roll, 2 rolls
- Total Count:100
- Material:Plant starch (corn) material
- Dimensions:24 inches x 30 inches
- Material Features:Compostable, durable, thickened design
Our verdict“This option suits those looking for durable, eco-conscious bags for small outdoor or kitchen compost bins.”
UNNI Compostable Bags, 13 Gallon, 50 Count, Extra Thick 0.9 Mil
This pick makes the most sense for busy kitchens or offices with tall trash cans, thanks to its extra-thick 0.9 mil construction and precise fit. Compared with the Compostable Trash Bags, these are more suited to handle daily food scraps and heavier waste loads, thanks to their extra durability. They are certified by multiple organizations, adding confidence in their biodegradability, but like others, they depend on proper composting conditions for full breakdown. Their slim profile ensures a snug fit for tall kitchen cans, but this means they may not work well with larger, wider bins. For those prioritizing durability and a secure fit in high-use environments, this bag is a strong choice.
Pros:- Extra thick at 0.9 mil for heavy-duty use
- Made from plant-based, certified compostable materials
- Designed to fit tall kitchen cans perfectly
Cons:- Limited to 13-gallon capacity
- Use within 9 months for best performance
- Commercial composting may be needed for full decomposition
Best for: Kitchen or office environments with tall, standard-sized waste cans needing heavy-duty, eco-friendly bags
Not ideal for: People with larger, wider bins or those who prefer lightweight, thinner bags for occasional use
- Capacity:13 gallons
- Unit Count:50
- Item Dimensions:6.42 x 4.41 x 4.41 inches
- Material:Plant-based
- Material Features:Extra thick, compostable
- Certifications:BPI, CMA, OK Compost
Our verdict“Ideal for busy kitchens or offices requiring durable, eco-friendly bags that fit tall cans securely.”
Reli. Compostable 33 Gallon Trash Bags | 40 Count | Green
This option stands out for those managing larger waste volumes, as its 30-33 gallon capacity makes it suitable for commercial or big household bins. Compared with the Reli. 13-gallon bulk, it offers a higher capacity, but it sacrifices some portability and ease of handling. Its tear resistance and leak-proof design help contain heavy or moist waste, which is essential for industrial composting settings. However, the slower breakdown rate in anaerobic landfills means it’s better suited for designated composting facilities rather than general waste disposal. Made with 30% plant-based materials, it aligns with eco-conscious priorities, but it’s limited to environments that support industrial composting.
Pros:- High capacity suitable for large waste volumes
- Made with 30% plant-based materials, eco-friendly
- Tear-resistant and leak-proof for heavy, moist waste
Cons:- Breakdown may be slow in landfills lacking composting facilities
- Limited to composting environments, not for general waste
Best for: Businesses or large households needing high-capacity, compostable waste containment
Not ideal for: Small kitchens or individuals expecting quick biodegradation in landfills
- Capacity:30-33 gallons
- Count:40
- Material:Plant-based (30%)
- Certification:ASTM-D6400
- Dimensions:33″x39″
- Tear Resistance:28 mic
Our verdict“This bag is ideal for large-scale composting where capacity and durability are priorities over rapid biodegradation.”
Simply Bio 13 Gallon Compostable Organic Bags Liners Drawstring, Heavy Duty Extra Thick 1 Mil, 49.21 Liter, 30 Bags
This pick makes the most sense for users needing a durable, 13-gallon bag that can handle kitchen scraps and household waste without tearing. Unlike the Reli. 13-gallon bags, it offers a thicker 1 mil material, which provides better resistance against sharp or heavy waste. The drawstring closure adds convenience for secure handling, especially when moving full bags, but the thicker material results in a slightly bulkier bag that may be less flexible. Certified to meet ASTM D6400 and EU EN 13432, it assures eco-conscious users of reliable compostability, though its size limits its use to smaller waste streams.
Pros:- Heavy-duty, 1 mil thick for improved tear resistance
- Drawstring closure simplifies handling and sealing
- Certified compostable to strict standards
Cons:- Limited to 13 gallons, not suitable for larger waste loads
- Bulkier due to thickness, less flexible for some uses
Best for: Home cooks or small households seeking heavy-duty, compostable waste bags for kitchen use
Not ideal for: Large-volume waste collection or outdoor yard waste, where larger capacity is needed
- Capacity:13 gallons
- Size:25.2 in x 25.6 in
- Thickness:1 mil
- Bags per roll:35
- Certification:ASTM D6400, BPI
- Material:Biodegradable, compostable
Our verdict“This bag is perfect for small-scale, heavy-duty kitchen waste where durability and eco-friendliness matter most.”
20 Gallon Compostable Trash Bags – 75L Biodegradable Organic Garbage Bags, 100 Count
This option makes sense for users with mixed waste streams, given its large 20-gallon capacity and durability. Compared with smaller 13-gallon bags like the Reli. 13-gallon, it offers increased volume for yard debris or bulkier household waste. Its leak-resistant design and plant-based materials promote eco-friendliness, but full biodegradation relies on industrial composting conditions, which might not be available everywhere. The roll format supports daily use, but the larger size and weight may be less convenient for compact storage or smaller waste needs.
Pros:- Large 20-gallon capacity for diverse waste
- Leak-resistant and durable for outdoor use
- Eco-friendly, plant-based biodegradable materials
Cons:- Requires industrial composting facilities for full biodegradation
- Potentially higher cost compared to standard plastic bags
Best for: Homeowners with outdoor space or larger household waste that benefits from high capacity
Not ideal for: Small apartments or users without access to industrial composting facilities
- Capacity:75 liters / 20 gallons
- Count:100
- Dimensions:22.83 x 11.81 x 11.81 inches
- Material:Biodegradable
- Leak Resistance:Yes
- Design:Easy-tear roll
Our verdict“This bag suits households with substantial waste volume, especially yard and outdoor waste, where capacity and durability are key.”
Reli. Compostable 13 Gallon Trash Bags | 150 Count Bulk | Green
This pick is well-suited for bulk household waste disposal, offering a generous 150-count pack of 13-gallon bags. Compared to the Simply Bio heavy-duty bags, it provides a larger quantity, making it ideal for busy households or commercial settings. Made with 30% plant-based materials and featuring tear resistance, it balances eco-friendliness with practicality. However, like others in this category, biodegradation in landfills can be slow, and the bags are limited to environments with proper composting conditions. The size and capacity make it less optimal for outdoor yard waste or large-scale commercial waste.
Pros:- Large bulk pack ideal for frequent waste collection
- Made from biodegradable, plant-based materials
- Tear-resistant and leak-proof for reliable use
Cons:- Full biodegradation depends on industrial composting
- Limited to composting environments, not landfills
Best for: Large households or small businesses seeking cost-effective, bulk compostable waste bags
Not ideal for: Individuals with infrequent waste disposal needs or no access to composting facilities
- Capacity:13 gallons
- Count:150
- Dimensions:24″x30″
- Material:Green compostable plastic
- Tear Resistance:Yes
- Leak-Proof:Yes
Our verdict“This bulk pack is a practical choice for high-volume household or small business waste, emphasizing cost and quantity.”
Reli. Compostable 33 Gallon Trash Bags | 80 Count, Eco-Friendly, Leak-Proof
This Reli. 33-gallon compostable trash bag stands out for its large capacity and tear-resistant design, making it ideal for managing heavy waste in industrial or commercial composting settings. Unlike smaller bags such as the UNNI 2.6 Gallon compostable bags, this model handles substantial loads, reducing the need for frequent replacements. Its 30% plant-based material and ASTM-D6400 certification assure eco-friendliness, but the breakdown process may be slow in landfills, limiting environmental impact if not composted properly. Compared to Reli.’s smaller 13-gallon options, this bag’s size makes it better suited for bigger bins, though it is limited to facilities with industrial composting capabilities. The leak-proof feature adds reliability for wet waste, but it’s not suitable for non-compostable waste streams.
Pros:- Large 33-gallon capacity ideal for heavy or bulky waste
- Tear-resistant and leak-proof for reliable containment
- Made with 30% plant-based materials, certified for industrial composting
Cons:- Breakdown rate may be slow in landfills, limiting environmental benefit if not composted properly
- Limited to industrial composting facilities, reducing usability for typical household waste
Best for: Businesses or institutions with large compost bins and access to industrial composting facilities needing durable, eco-friendly liners.
Not ideal for: Home users with small compost bins or those relying on landfills, since breakdown may be slow and composting conditions vary.
- Capacity:33 gallons
- Count:80
- Material:Green Compostable Plastic
- Material Features:Compostable, Tear-Resistant (28 mic)
- Dimensions:33″x39″
- Certification:ASTM-D6400
Our verdict“This bag is a strong choice for large-scale, eco-conscious waste collection in commercial or institutional settings, provided industrial composting is accessible.”
How We Picked
These products were selected based on a combination of performance, usability, and value. We prioritized bags that offer reliable compostability without sacrificing strength or convenience, such as leak-proof features or extra thickness. Price per bag was a key factor, especially for bulk purchases, to ensure affordability. Durability and ease of use, like drawstring closures, also influenced rankings, as these features improve the user experience. Ultimately, the products were ordered to reflect a balance of quality and cost, with special attention to versatility across different household sizes and needs.Factors to Consider When Choosing Compostable Trash Bags Bulk
Choosing the right compostable trash bags in bulk involves more than just size and price. Consider durability, thickness, capacity, and additional features to find a product that matches your waste disposal habits while maintaining eco-friendliness. Making the wrong choice can lead to leaks, tears, or unnecessary expense, so understanding these factors helps avoid common pitfalls.Size and Capacity
Size is fundamental. Smaller households or office spaces may benefit from 2.6 to 13-gallon bags, while larger families or commercial settings might need 33-gallon options. Be cautious about overestimating capacity, as larger bags tend to cost more and may be harder to fit into smaller trash cans. Selecting the right size ensures efficient use of the bags without waste or inconvenience.
Thickness and Durability
Thicker bags, typically measured in mils, offer increased resistance to tears and leaks—especially important if you handle heavier or wetter waste. However, very thick bags can be more expensive and less flexible. Balance your needs: if you frequently dispose of moist waste, prioritize thicker, leak-proof options; for lighter waste, a thinner bag might suffice and save money.
Eco-Friendliness and Certification
Not all compostable bags are certified or equally eco-friendly. Look for third-party certifications like ASTM D6400 or BPI approval, which guarantee compostability in commercial facilities. This ensures your purchase genuinely supports environmental goals rather than just marketing claims. Remember, compostable bags require appropriate disposal—don’t assume they decompose in regular trash or landfills.
Features and Ease of Use
Features like drawstrings or leak-proof linings can make handling and disposal easier, especially in busy households or commercial settings. Drawstrings prevent spills, while leak-proof linings add an extra layer of protection for your bins. Weigh these features against the added cost—they’re often worth it if you prioritize convenience and cleanliness.
Cost and Value
Bulk purchasing typically lowers the cost per bag, but prices vary widely based on thickness, size, and brand. Consider your actual usage to avoid overspending on more durable or feature-rich bags than you need. Sometimes, paying a bit more upfront for higher quality reduces replacement frequency and waste, saving money over time.
Frequently Asked Questions
Will compostable trash bags break down in a regular garbage bin?
Most compostable trash bags are designed to break down in composting facilities, which are separate from regular landfills. In a standard garbage bin, they may not decompose quickly or at all, as landfills often lack the conditions needed for composting. To ensure eco-friendliness, these bags should be disposed of in appropriate composting environments, ideally in commercial composting programs.
Are thicker compostable trash bags worth the extra cost?
Thicker bags generally provide better resistance against tears and leaks, which can be especially important if you’re disposing of wet or heavy waste. While they cost more upfront, their durability can reduce the frequency of replacements and messes, making them more cost-effective in the long run. If you handle larger or wetter waste, investing in thicker options can significantly improve your experience.
Can I use compostable trash bags for yard waste?
Yes, many compostable trash bags are suitable for yard waste, especially those designed for outdoor or garden use. However, check the product specifications to ensure they can withstand outdoor conditions like moisture and UV exposure. Using the right size and thickness for yard debris helps prevent tears and makes collection easier.
What is the typical lifespan of a compostable trash bag?
The lifespan of a compostable trash bag depends on environmental conditions and usage. In a typical household setting, they’re designed to hold waste until disposal, often a few days. In composting facilities, they can break down within a few months, but in landfills, decomposition is much slower and less predictable. Always store them in a cool, dry place to maintain their integrity until use.
Are there any downsides to using compostable trash bags?
While eco-friendly, compostable trash bags often cost more than conventional plastic bags and may not be as durable in all conditions. They require proper disposal in composting facilities to decompose effectively; otherwise, they can persist in landfills. Additionally, not all compostable bags are suitable for heavy or wet waste unless specifically reinforced, so selecting the right thickness and features is important for your needs.
Conclusion
For those seeking the best overall blend of durability, eco-friendliness, and affordability, the Reli. 13 Gallon Compostable Trash Bags make a reliable choice for most households. Budget-conscious buyers or smaller spaces benefit from the UNNI 2.6 Gallon Compostable Bags, ideal for light waste and compact disposal needs. Premium users or commercial settings might prefer thicker, feature-rich options like the Simply Bio 13 Gallon Compostable Organic Bags for added convenience. Beginners should focus on size and ease of use, while eco-conscious consumers should prioritize certified compostability and proper disposal methods. Match the product to your waste volume, handling preferences, and environmental goals for the best results.Fall Picks
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