Works as a single-feed rodenticide that's equally effective on mice and rats - they only need to feed once to consume a lethal dose. Rodents will eat Hombre™, not your feed! In an EPA registration trial, Hombre™ reduced the mouse population in a grain storage building by 99%, showing that the mice actually preferred Hombre™ to the abundant grain supply. Contains virtually-undetectable active ingredient, difethialone. Yellow color makes it easy to identify. Most effective rodenticide on roof rats available! Ideal for hard-to-control situations, like poultry houses and hog barns. 10-lbs. of blocks.  $46.95