Avant Grub Biodegradable 6x6 Take Out Food Containers with Clamshell Hinged Lid Mi
Lower concern. Plant-based packaging typically avoids PFAS, but no verification given.
Avant Grub uses bagasse, a plant-based material with inherently lower PFAS risk compared to plastic-coated containers. Brand provides no PFAS disclosure or third-party certification, leaving some uncertainty about processing or coatings applied.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Bagasse (sugarcane fiber), compostable/biodegradable formulation
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Microplastic/fiber shedding from material breakdown
Bagasse is not a plastic, but aggressive heating, moisture, or prolonged storage can cause cellulose fibers to fragment and potentially enter food. This is less severe than synthetic microplastics but represents a physical contamination risk if containers degrade prematurely.
Formaldehyde / VOCs
Bagasse processing typically involves whitening agents and small amounts of synthetic binders or sealants to achieve food-contact coating. No published analysis of Avant Grub containers' specific processing chemicals is available; residue risk is lower than virgin plastics but unverified for this brand.
Source: ATSDR ↗Moisture absorption and microbial growth if stored improperly
Bagasse is hygroscopic (absorbs moisture readily), creating risk for mold, bacterial biofilm, or decomposition if stored in humid conditions before use. This does not constitute a leaching hazard but a food-safety and product-integrity issue.
Thermal degradation and leaching at high temperatures
Some bagasse containers degrade or warp above 185°F, potentially releasing uncharacterized organic compounds into hot foods. Testing on Earthwise-branded containers specifically is not publicly available; this risk is documented for the material class generally.
What’s reassuring
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
BPA & bisphenols
Bagasse formulations do not contain BPA, BPS, or phthalate plasticizers by material chemistry. No history of contamination in this product line.
Source: FDA ↗The full breakdown
What it's made of and why it matters
Avant Grub containers are made from bagasse, the fibrous residue left after sugar extraction from sugarcane. This material is fundamentally different from petroleum-based plastics or polystyrene foam, meaning it does not contain BPA, BPS, phthalates, or the polymer chains that typically leach into food when heated. Bagasse is primarily cellulose and lignin, which are stable plant polymers that do not degrade into endocrine disruptors or microplastics under normal food-contact conditions. The compostable formulation suggests minimal synthetic binders, though industrial processing may introduce trace processing aids.
The brand's record and disclosure
Earthwise (the parent brand/distributor) does not publicly disclose detailed material sourcing, processing chemical inventories, or third-party testing results for these containers. No established recalls, contamination incidents, or safety violations are on record for this specific product line. The company markets the containers as compostable and biodegradable, which is accurate for bagasse, but provides no certification documentation (such as BPI compostability certification) readily available to consumers. This silence on verification is typical of smaller eco-packaging suppliers and does not indicate a safety problem, only incomplete transparency.
How it compares in its category
Bagasse clamshells are significantly safer than polystyrene foam (which can leach styrene) and comparable to or safer than recycled PET containers (which may retain processing residues). They avoid the microplastic shedding risk of some compostable plastic blends (PLA/PBAT) if properly manufactured, since bagasse is not a synthetic polymer. However, they are less heat-stable than rigid polypropylene or high-temperature ceramics, making them unsuitable for very hot foods. Most bagasse products lack independent certification, so they sit in a middle ground: lower chemical risk, but less regulatory oversight than mainstream food-service plastics.
If you buy it
Do not use for liquids above 185°F (85°C) or microwave at high power, as bagasse can weaken and potentially shed fiber fragments into food; test with lukewarm liquids first. Store dry before use to prevent premature decomposition or mold growth in humid conditions. These containers are best suited for room-temperature or warm (not piping-hot) takeout meals. Replace if you notice softening, discoloration, or odor; compostable materials degrade faster than plastics, especially if exposed to moisture or sunlight during storage.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Earthwise has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Food Packaging
World Centric
Compostable Fiber Compost-A-Pak Containers
Fiber-based (wood pulp/molded fiber), compostable coating
Proprietary coating chemical migration
Limited concern
Moisture and microbial growth in fiber matrix
Limited concern
Coating degradation under heat or fatty foods
Moderate concern
Recycling contamination if misdisposed
Limited concern
Lower concern with documented PFAS-free commitments, though independent lab confirmation on this specific product absent.
✓Verified PFAS-free by a third party
Vegware
Compostable Microflute Takeaway Box
Plant-based fiber (sugarcane bagasse microflute); water-based coatings
Coating degradation under heat and moisture
Limited concern
Lower concern; plant-based compostable packaging with stated PFAS-free positioning and limited independent verification.
✓Verified PFAS-free by a third party
Loliware
Compostable Hinged Deli Containers
Polylactic acid (PLA) bioplastic, plant-based coatings
PLA oligomer leaching
Limited concern
Microplastic generation on degradation
Limited concern
Lower PFAS concern; compostable bioplastic design avoids fluorine coatings.
✓Verified PFAS-free by a third party
More food packaging grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.