Washington State (RCW 15.53.902) — Adulteration of commercial feed (includes pet food)
Source: RCW 15.53.902, Washington State Legislature (app.leg.wa.gov), retrieved 2026-07-30. Pet food / specialty pet food are "commercial feed" under RCW 15.53, so this adulteration standard applies to pet food distributed in Washington.
This P3 topic covers the adulteration prohibition and its definitions.
Adulteration framework
Claims (verified C1 substrings of source_file)
It is unlawful for any person to distribute an adulterated feed.(EN: Distributing adulterated feed is unlawful — RCW 15.53.902.)If it bears or contains any poisonous or deleterious substance which may render it injurious to health(EN: Adulterated if it bears/contains any poisonous or deleterious substance that may render it injurious to health — RCW 15.53.902(1).)If it is, or it bears, or contains any food additive which is unsafe within the meaning of section 409 of the federal food, drug, and cosmetic act (21 U.S.C. Sec. 348)(EN: Adulterated if it contains a food additive unsafe under FD&C Act § 409 — RCW 15.53.902(3).)If it is ruminant feed and is, bears, or contains any animal protein prohibited in ruminant feed that is unsafe within the meaning of federal regulations promulgated under section 409 of the federal food, drug, and cosmetic act (21 U.S.C. Sec. 348)(EN: Ruminant feed adulterated if it contains prohibited animal protein unsafe under FD&C Act § 409 — RCW 15.53.902(4).)If it contains viable, prohibited (primary) noxious weed seeds in excess of one per pound, or if it contains viable, restricted (secondary) noxious weed seeds in excess of twenty-five per pound.(EN: Noxious-weed-seed limits — >1 prohibited (primary) seed/lb or >25 restricted (secondary) seeds/lb — RCW 15.53.902(11).)