Open Farm · Pet Food Bags
Open Farm Ancient Grains Pasture-Raised Lamb Dry Dog Food
Lower PFAS concern for food itself; bag coating risk unspecified but typical for dry pet food.
Open Farm does not disclose PFAS mitigation on this product. The bag is standard kraft paper with a polymer moisture barrier, the inner coating material is not publicly identified and could contain PFAS. The dry kibble itself has lower inherent risk, but the packaging is the unknown variable.
Shop Open Farm on Amazon →Material
paper/kraft bag with polymer inner liner (standard pet food packaging)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Open Farm Ancient Grains uses a multi-layer kraft paper bag with an inner polymer liner, standard for dry pet food preservation. The polymer liner (likely polyethylene or polypropylene) prevents moisture ingress and maintains kibble freshness but introduces potential PFAS-based water-repellent coatings common to the category. The food itself contains lamb protein, ancient grains (quinoa, millet, etc.), and stated non-GMO ingredients with no known heavy metal or mycotoxin contamination issues on record.
The brand's record and disclosure
Open Farm is owned by Petropics and markets itself around ingredient quality and sustainability but does not publicly disclose PFAS testing, bag coating chemistry, or detailed material sourcing. The brand has not faced major FDA recalls for contaminants (lead, mycotoxins, salmonella in recent years), indicating baseline manufacturing controls. However, transparency around polymer liner composition and non-PFAS alternatives remains absent from public statements, reflecting broader industry silence rather than brand-specific negligence.
How it compares in its category
Dry pet food bags are nearly universally made with polymer-lined kraft paper; Open Farm's construction is typical, not exceptional. Competitor brands (Orijen, Acana, Primal) use identical or similar packaging without documented PFAS disclosure. The ingredient profile (pasture-raised lamb, ancient grains) positions it as premium within the category, but packaging safety parity means no comparative advantage in avoiding coating hazards.
If you buy it
Store unopened bags in cool, dry conditions away from direct heat or sunlight to minimize polymer liner degradation and any potential leaching. After opening, transfer kibble to airtight glass or food-grade plastic containers within 2 weeks to prevent rancidity and limit continued polymer contact. Do not microwave kibble in the bag or use the bag itself for storage longer than intended. Replace bags showing visible wear, punctures, or odor changes immediately.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
PFAS in bag polymer coating
Kraft pet food bags commonly use fluorinated water-repellent coatings; Open Farm does not disclose coating chemistry, so PFAS presence is unconfirmed but consistent with industry practice. Direct food contact risk is low for dry kibble but increases if bag is stored damp or punctured.
Polymer liner degradation and microplastic migration
Extended storage, heat exposure, or bag puncture can cause inner polymer to flake or degrade. Risk to pet is low if kibble is transferred to glass storage, but residual plastic particles may contact food during bag use.
Mycotoxin contamination (aflatoxins, vomitoxins)
Open Farm has not faced documented FDA recalls for mycotoxins in lamb or grain ingredients. Brand maintains ingredient sourcing standards, but no independent third-party testing results are publicly available for verification.
Heavy metals in lamb and grain
Lead, cadmium, and arsenic in pet food are regulated by AAFCO standards; Open Farm lamb and ancient grains carry no known recalls or contamination reports. However, the brand does not publish heavy metal test certificates for individual batches.
BPA/BPS in polymer liner
Modern pet food bag liners typically avoid BPA, but secondary plasticizers (BPS, other bisphenols) are possible. Open Farm does not specify polymer type or additives, so presence cannot be ruled out but is not documented.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 68% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
More pet food bags 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.