BioBag 3-Gallon Compostable Food Scrap Bags Review: Do They Hold Up?

Can a compostable bag handle daily kitchen food scraps without falling apart? That question led me to test the BioBag 3-Gallon Compostable Food Scrap Bags over several weeks of everyday use.

BioBag has been producing compostable bags in the United States since 2002, making them one of the longest-running brands in this space. Their 3-gallon bags are made from Mater-Bi, a plant-based bioplastic derived from corn starch, vegetable oils, and compostable polymers. Each bag is BPI certified to meet ASTM D6400 standards for commercial composting.

I used these bags in my kitchen countertop compost bin, filling them with fruit peels, coffee grounds, and vegetable scraps. The short answer: they do the job well for most composting needs, though they require a bit more care than traditional plastic bags.

What I Liked About BioBag Compostable Bags

Certified Compostable and Eco-Friendly

BioBag holds more certifications than most competitors in this category. Each bag carries BPI certification, TUV Austria OK Compost HOME approval, and Non-GMO Project Verified status. Unlike biodegradable bags that can leave microplastics behind, BioBag products decompose into water, carbon dioxide, and organic biomass.

The Mater-Bi resin is sourced from Italy and blown into bags at BioBag’s California facility. This plant-based material sets BioBag apart from brands that use petroleum-based additives.

Breathable Design Reduces Odor

One feature I appreciated was the breathability. BioBag bags allow heat and moisture to escape without leaking liquid. This ventilation reduces bacterial build-up inside the bag, which means less odor between changes.

In my testing, the compost bin smelled noticeably less when using BioBag compared to sealed plastic bags. The moisture evaporation also kept the bag contents drier and easier to handle.

Handles Food Scraps Without Leaking

The star-sealed bottom provides extra strength where it matters most. I loaded these bags with coffee grounds, banana peels, vegetable trimmings, and eggshells without any bottom-out failures.

For standard kitchen food scraps, the 0.64 mil thickness holds up well. The key is avoiding sharp bones or overloading beyond the 3-gallon capacity.

Fast Decomposition in Compost Pile

BioBag earned the top spot for decomposition speed in Sustainable Jungle’s vermicomposter test. Their GMO-free resin showed significant degradation in under three months, faster than UNNI, Ecolipak, and other tested brands.

For anyone with a municipal composting program, these bags meet all requirements for curbside collection. They break down completely without leaving harmful residues.

Fits Standard Kitchen Compost Bins

The 16.9 x 17.7-inch dimensions fit most standard countertop composting pails. I used them with a standard 3-gallon kitchen compost bin and had no issues with fit or overhang.

The 100-count box lasts several months for an average household, assuming you change bags every three to five days as recommended.

What Needs Improvement

Thinner Than Plastic Bags

At 0.64 mil, BioBag bags are noticeably thinner than traditional plastic trash bags and some competing compostable brands. UNNI bags, for example, come in at 0.71 mil. This thinness means you need to be more careful when pulling bags off the roll and when handling them.

If you rush tearing a bag off the roll, the edges will rip. Taking an extra 20 seconds to gently separate and shake out each bag prevents most tearing issues.

Moisture Weakens the Bottom

The biggest functional concern is moisture. When wet food scraps sit against the bottom for extended periods, the material softens. I experienced this with watermelon rinds left overnight.

The fix is straightforward: place a paper towel at the bottom of the bag before adding food scraps. This absorbs excess moisture and extends the bag’s usable life. Changing bags every three to five days also helps.

Higher Price Per Bag

At roughly $0.21 per bag (based on the 100-count package), BioBag costs more per unit than regular plastic garbage bags. The price reflects the plant-based materials and multiple certifications, but it is a consideration for budget-conscious households.

Buying in larger quantities or subscribing through Amazon can reduce the per-bag cost. For those committed to reducing plastic waste, the environmental trade-off may justify the higher price.

How It Compares

vs UNNI Compostable Bags

UNNI is BioBag’s closest competitor in the 3-gallon compostable bag category. UNNI bags are thicker at 0.71 mil compared to BioBag’s 0.64 mil, giving them an edge in durability with heavier loads.

Where BioBag wins is decomposition speed. In composting tests, BioBag broke down faster than UNNI. BioBag also holds more certifications, including the TUV Austria OK Compost HOME certification that UNNI lacks. If composting speed and certification breadth matter to you, BioBag is the stronger choice. If durability is your top priority, UNNI deserves a look.

vs Ecolipak Compostable Bags

Ecolipak offers thicker material and competitive pricing. Their bags are designed for the same kitchen compost bin use case and carry BPI certification.

BioBag’s advantage is brand reputation built over two decades and a more extensive list of third-party certifications. Ecolipak is a solid alternative if you find BioBag out of stock or want a thicker bag at a similar price. We also tested the smaller format in our BioBag 3-gallon compost bags review, which covers durability and moisture handling in more detail.

vs Simply Bio Compostable Bags

Simply Bio competes on price, often coming in lower per bag than BioBag. Both brands carry BPI certification and target the same countertop composting market.

BioBag’s longer track record since 2002 and Italian-sourced Mater-Bi resin give it an edge in proven reliability. Simply Bio is worth considering if price is your primary decision factor.

Final Verdict

The BioBag 3-Gallon Compostable Food Scrap Bags deliver on their core promise: a genuinely compostable alternative to plastic bags for kitchen food waste. I rate them 4.2 out of 5.

The extensive certifications, fast decomposition rate, and breathable design earn high marks. The thinner material and moisture sensitivity hold them back from a perfect score, but neither issue is a dealbreaker with proper handling.

Bottom line: BioBag is the most established name in compostable bags for a reason. If you compost at home or through a municipal program, these bags make the process cleaner and more sustainable without sacrificing functionality.