In most countries general legislation on food (and feed) prohibits the sale of products containing poisonous or harmful substances, which would include relevant mycotoxins as well. So far only aflatoxin has been dealt with specifically in legislation. The aflatoxin control may include all foods (and feeds) but is limited in most countries to certain commodities likely to be heavily contaminated, viz. oilseeds and derived products. The aflatoxin tolerances established for foods vary from zero (level set by analytical method) through 30 ppb to 50 ppb. Tolerances for feeds are generally higher.