PFI challenges Clean Label Project cat food contaminant study

A new cat food contaminant study from Clean Label Project has triggered a sharp response from the Pet Food Institute, opening a familiar fault line in pet nutrition: the difference between detecting contaminants and proving meaningful safety risk. Clean Label Project’s 2026 report tested 100 cat foods from 62 brands and said heavy metals were nearly universal across the category, while PFI said the findings lack the scientific and regulatory context needed to keep pet parents from drawing the wrong conclusions. (cleanlabelproject.org)

The backdrop here is broader than one report. FDA says pet food is regulated under the Federal Food, Drug, and Cosmetic Act, and that the agency and state partners use inspections and contaminant monitoring programs to help prevent adulteration and other safety issues. FDA also says its Center for Veterinary Medicine routinely tests animal food for chemical contaminants, including trace elements, and evaluates findings based on public and animal health risk rather than presence alone. That framework helps explain PFI’s response, which emphasizes existing food safety systems and the idea that detectable amounts of some metals can occur naturally in the environment. (fda.gov)

Clean Label Project, for its part, framed the report as a category benchmark rather than a regulatory compliance exercise. The group said it used an ISO 17025-accredited lab and tested for more than 122 environmental and industrial contaminants. Its report presents results on a per-1,000-kilocalorie basis rather than per kilogram of food, arguing that calorie-adjusted exposure better reflects how cats actually consume diets over time, especially when comparing wet and dry foods with very different moisture content. The report also explicitly says its results are “not a safety determination for any individual product.” (cleanlabelproject.org)

Among the headline findings, Clean Label Project said lead was detected in 99% of products, cadmium in 96%, and arsenic in 94%. It also reported that fish and seafood formulas carried about 18 times the mercury of other products after accounting for format, and that dry foods carried roughly three times the lead of wet or air-dried products. At the same time, the group noted that “detected” does not itself mean dangerous, and that its “Clean Sixteen” lists are intended to highlight comparatively lower-contaminant products within the category. (cleanlabelproject.org)

PFI’s rebuttal is focused on methodology and interpretation. In its October 2 statement, CEO Elise Fennig said the study evaluates foods against a proprietary standard rather than established regulatory standards or science-based risk assessments. PFI also questioned whether the work underwent scientific or veterinarian review, said the report does not provide enough context to determine whether the findings are relevant to cat health or product safety, and pointed out that the results were based on a single batch of each product. Pet Food Processing’s coverage similarly characterized PFI’s concern as a warning that the study could mislead cat owners by omitting scientific and regulatory context. (petfoodinstitute.org)

There is also a deeper policy tension underneath this exchange. Clean Label Project argues that few applicable contaminant standards exist for cat food and that existing animal-feed reference values were not designed around a housecat eating the same diet for years. FDA guidance, however, makes clear that contaminant oversight in animal food is risk-based and that action depends on multiple factors, including exposure level and avoidability. Those aren’t identical frameworks, and veterinary professionals may increasingly be asked to explain the gap between comparative contaminant ranking and clinically actionable risk. That’s especially true when a report uses consumer-facing language about “toxins” or “purity,” but stops short of alleging that individual foods violate law or are unsafe. (cleanlabelproject.org)

Why it matters: In practice, this story is likely to land in exam rooms before it lands in any enforcement docket. Clinics may see anxious pet parents asking whether they should stop feeding dry food, avoid fish formulas, or switch brands immediately. The current evidence in the public materials supports a more measured response: the report suggests patterns worth discussing, particularly around ingredient sourcing and chronic exposure questions, but it does not establish that the tested foods were unsafe under regulatory standards, nor has FDA announced a recall or enforcement action tied to the findings. For veterinarians, the value is in helping clients interpret nuance, avoid abrupt diet changes that could create other problems, and focus on the pet’s overall nutritional needs, medical history, and tolerance of any diet transition. (cleanlabelproject.org)

What to watch: The next meaningful development would be independent expert analysis, manufacturer-specific responses, or regulatory follow-up that translates category-level findings into clearer risk thresholds or repeat testing across multiple lots. If that doesn’t happen, this may remain primarily a communications battle over transparency, methodology, and how much context pet parents need when contaminant detection becomes a headline. (petfoodinstitute.org)