Description Offered in a convenient 4 Pack, tomcat rodent bait is extremely effective, killing rodents in just 4 to 6 days. Designed to perform, the multi-feeding bait is mold & moisture-resistant & utilizes the extremely powerful chemical, diphacinone, as the active ingredient. For safety, the bait is sold for rural/agricultural use only. Ordering restrictions may apply; contact Merchant for ordering details.PRODUCT DETAILS:Bar-type bait for the control of norway rats roof rats and house mice Block breaks easily into small pieces Stable moisture resistant formula for use indoors and out Kills mice and rats in 4 to 6 days Made in the usaSize: 4x1 Lb BlockIngredients: Active Ingredient: Diphacinone 0.005%