Because animals are increasingly subjected to contaminated water and feed many small and large farmers are following an age-old practice of mixing charcoal either into drinking water or the feed. This practice is widely followed in Europe with commercial activated charcoals specifically designed to be added to cattle and poultry feed. The activated charcoal supplement is able to adsorb many toxins from water-borne organisms or toxins from decomposing feeds. An added benefit is the marked reduction in waste odors.