(2) Nothing in this chapter requires or authorizes the licensing or regulation of the sale of economic poisons, which includes any substance or mixture of substances intended to be used for preventing, destroying, repelling or mitigating any and all insects, fungi, weeds, parasites, or other plant or animal pest, collectively or individually, which may infest or be detrimental to vegetation or any domestic animal or fowl life. [1979 c.777 §40; 1985 c.565 §112]