(1) This chapter applies to commercial feed as defined in RCW 15.53.901 which includes, but is not limited to, food for beef cattle, dairy cattle, equine, goats and sheep, chickens and turkeys, ducks and geese, fish, rabbits, and swine.

(2) Pet food for dogs (Canis familiaris), cats (Felis catus), and specialty pet food for any animal normally maintained in a household such as, but not limited to, rodents, ornamental birds, ornamental fish, reptiles and amphibians, ferrets, hedgehogs, marsupials, and rabbits not raised for food or fur are regulated under chapter 16-252 WAC.

(3) Processed animal waste as a commercial feed is regulated under chapter 16-256 WAC.

(4) If adulterated under RCW 15.53.902 for some but not all purposes, the following commodities are subject to the requirements of this chapter. If unadulterated, the following commodities are exempt from the requirements of this chapter.

(a) Unmixed whole seeds and physically altered entire unmixed seeds when such seeds are not chemically changed.

(b) Raw meat, hay, loose salt, straw, stover, silage, cobs, husks, and hulls when such commodities are not ground, mixed or intermixed with other materials.