Aflatoxins are poisonous carcinogens that are produced by certain molds (Aspergillus flavus and Aspergillus parasiticus) which grow in soil, decaying vegetation, hay, and grains. They are regularly found in improperly stored stample comodities such as cassava, chili peppers, corn, cotton seed, millet, peanuts, rice, seeds, sorghum, sunflower seeds, tree nuts, wheat, sesame and a variety of spices. When contaminated food is processed, aflatoxine enter the general food supply where they have been found in both pet and human foods, as well as in feedstoks for agricultural animals. Animals fed contaminated food can pass aflatoxin transformation products into eggs, milk products, and meat. For example, contaminated poultry feed is suspected in the findings of high percentages of samples of aflatoxin-contaminated chicken meat and eggs in Pakistan.