The scores
Stella & Chewy's Chewy's Chicken Freeze-Dried Raw Dinner Patties: A (90/100) — 95% chicken, chicken organs, and ground bone. Four probiotic strains. SecureByNature HPP explicitly documented.
Open Farm Harvest Chicken Freeze-Dried Raw: A (90/100) — Certified Humane chicken, Global Animal Partnership (GAP) verified. Traceable supply chain published on openfarmpet.com.
Both brands sit at A/90 under the same Fresh Food Rubric v1.0. Under the rubric’s raw-format pathway, a +5 bonus applies when pathogen control is documented (HPP or test-and-hold) or when third-party welfare certifications create comparable quality-assurance signals. Stella clears the HPP lever directly; Open Farm clears the third-party certification equivalent.
How the ingredients compare
Stella & Chewy's (Chicken): Chicken with ground bone, chicken liver, chicken gizzard, pumpkin seed, organic cranberries, organic spinach, organic broccoli, organic beets, organic carrots, organic squash, organic blueberries, fenugreek seed — then mineral tail plus four probiotic strains.
Open Farm (Harvest Chicken): Certified Humane cage-free chicken, chicken livers, chicken gizzards, chicken hearts, pumpkin seeds, non-GMO vegetables and fruits, salmon oil, kelp, and supplementation.
Both start with chicken plus multiple poultry organs — the raw-food ideal. Open Farm additionally lists chicken hearts as a third distinct organ on its poultry SKU, which is a muscular organ high in coenzyme Q10 and specific amino acids (taurine, glycine). Stella’s panel has two organs (liver, gizzard) but includes four distinct probiotic strains in the supplementation tail.
Where Stella & Chewy's pulls ahead
Explicit HPP documentation: SecureByNature is publicly named as an HPP process on stellaandchewys.com, on product pages, and in marketing content. Under our rubric, explicit HPP documentation is the highest-confidence path to the +5 raw-format bonus. Open Farm’s pathogen-control protocol exists and is industry-standard, but the specific method (HPP vs test-and-hold vs other) is not as publicly documented as Stella’s.
Four-strain probiotic stack: Pediococcus acidilactici, lactobacillus acidophilus, bifidobacterium longum, and bacillus coagulans at 50M CFU/oz minimum. Open Farm’s freeze-dried raw line includes fewer discrete probiotic strains.
Animal-ingredient concentration: The "95% chicken, organs, and bone" claim is the strongest animal-ingredient concentration statement in our catalog. Open Farm’s formulation is also animal-forward but not framed as a consolidated percentage. Shop on Amazon →
Where Open Farm holds its own
Third-party welfare certifications: Certified Humane is a third-party audited standard for farm animal welfare with specific living condition, feed, and handling requirements. Global Animal Partnership (GAP) is a five-tier welfare rating with transparent criteria at each level. Neither certification exists at the Stella & Chewy’s level of public documentation. For owners who prioritize welfare and ethics as a purchasing criterion, Open Farm is the clearer choice.
Ingredient traceability: Open Farm publishes traceable supply chain information on openfarmpet.com down to the farm-of-origin level for some SKUs. This is extraordinary transparency in the pet-food category and creates an audit trail that brand claims alone can’t match.
Third organ meat: Chicken hearts on top of chicken liver and chicken gizzard gives Open Farm a three-organ stack on its poultry freeze-dried raw SKU, which is a specific advantage for owners trying to closely approximate ancestral-diet organ-meat variety. Shop on Amazon →
The bottom line
This is a tie on measurable rubric-scored ingredient quality — both A/90 with different paths to the raw-format bonus. For HPP documentation and probiotic density, Stella & Chewy’s Freeze-Dried Raw. For third-party welfare certifications and farm-level traceability, Open Farm Freeze-Dried Raw. Both are pantry-stable (rehydrate before feeding) and priced at the premium end of the freeze-dried raw category. If you want the frozen-raw alternative with the same HPP documentation, Primal Pronto is the peer to compare.