75Excellent

Do Open Farm pet food bags have PFAS?

The verdict
Open Farm pet food bags average 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 6 Open Farm pet food bags graded as of November 2026, above the 70 out of 100 median for the 7 other pet food bags brands graded alongside it.
Free to quote with attribution to PFAS Authority and a link to pfasauthority.com/brands/open-farm/pet-food-bags.

Open Farm pet food bags average Excellent on our four-band scale. 6 of the 6 we graded are worth buying. That is above 71% of the pet food bags brands we grade.

PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.

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Top-graded picks in the categories readers replace first, every one scored on the same rubric.

  • polypropylene filter housing, carbon/sediment cartridge
  • We found no PFAS statement from the brand
  • Bacterial growth in spent cartridges

3 hazards checked on this product, all on its full breakdown.

  • RO membrane, carbon filters, stainless steel housing
  • We found no PFAS statement from the brand
  • Bacterial and microbial growth in housing and filters

4 hazards checked on this product, all on its full breakdown.

Avocado Vegan Mattress

Avocado

Vegan Mattress

100ExcellentPFAS grade
✓ MADE SAFE Certified✓ Global Organic Textile Standard (GOTS)
  • organic cotton, natural latex, coconut coir, recycled steel coils
  • The brand calls it PFAS-free, which we have not verified
  • Heavy metals

2 hazards checked on this product, all on its full breakdown.

Open Farm pet food bags worth buying Good or better, best-graded first

  • kibble (meat, grains, typical dry food ingredients)
  • We found no PFAS statement from the brand
  • Lead. Rendered meat products and mineral supplements in pet food can accumulate metals from feed sources, but…

4 hazards checked on this product, all on its full breakdown.

Open Farm

Ancient Grains Puppy Dry Dog Food

75ExcellentPFAS grade
  • Dry kibble in paper/cardboard bag
  • We found no PFAS statement from the brand
  • Mycotoxin (aflatoxin) contamination. Dry kibble is vulnerable to aflatoxin-producing molds if stored…

3 hazards checked on this product, all on its full breakdown.

Open Farm

Farmstead Duck & Ancient Grains Dry Dog Food

75ExcellentPFAS grade
  • Dry kibble with duck and grains
  • We found no PFAS statement from the brand
  • Mycotoxin contamination (aflatoxin). Grain-based kibbles can accumulate aflatoxins if grains were stored in…

4 hazards checked on this product, all on its full breakdown.

Open Farm

Harvest Chicken & Ancient Grains Dry Dog Food

75ExcellentPFAS grade
  • kibble and grain ingredients in paper/cardboard bag
  • We found no PFAS statement from the brand
  • Microbial contamination (mold, salmonella, E. coli). Dry kibble is shelf-stable, but cardboard bags can allow…

4 hazards checked on this product, all on its full breakdown.

  • paper/cardboard bag with inner polymer coating (likely polyethylene)
  • We found no PFAS statement from the brand
  • Polymer liner degradation and microplastic shedding. Over extended storage (6-12 months), polyethylene liners…

3 hazards checked on this product, all on its full breakdown.

  • Paper/cardboard bag with plastic lining (typical dry pet food packaging)
  • We found no PFAS statement from the brand
  • Plastic migration from bag lining. Standard polyethylene or polypropylene bag liners can leach trace…

2 hazards checked on this product, all on its full breakdown.

Better pet food bags from other brands

Graded higher than the Open Farm average of 75.

Milk-Bone Flavor Snacks Dog Biscuits

Milk-Bone

Flavor Snacks Dog Biscuits

85ExcellentPFAS grade
  • Wheat flour, meat by-products, soy lecithin, standard binders and preservatives
  • We found no PFAS statement from the brand
  • Rancidity and oxidative degradation of fats

2 hazards checked on this product, all on its full breakdown.

Milk Bone Mini Flavor Snacks Dog Treats

Milk-Bone

Milk Bone Mini Flavor Snacks Dog Treats

85ExcellentPFAS grade
  • Grain, meat, fat, vegetable oil based ingredients
  • We found no PFAS statement from the brand
  • Mold and mycotoxin growth

3 hazards checked on this product, all on its full breakdown.

MILK-BONE ORIGINAL DOG BISCUITS

Milk-Bone

ORIGINAL DOG BISCUITS

85ExcellentPFAS grade
  • grain flour, meat meal, binders, standard dog biscuit
  • We found no PFAS statement from the brand
  • Rancidity and fat oxidation

2 hazards checked on this product, all on its full breakdown.

The same question, asked of the other pet food bags brands

Best average grade first. Open Farm averages 75.

See every Open Farm product we grade on the Open Farm brand page, or the full pet food bags ranking.