Controls Norway rats, roof rats, and house mice. Mold and moisture-resistant bars. This product may only be used inside and within 50 Ft. of buildings or inside of transport vehicles. Contains a 1st generation anticoagulant rodenticide. Made with processing technology to produce a palatable and highly attractive fish flavored bait that retains its freshness, sweetness, and effectiveness even in difficult conditions. Active Ingredient: Diphacinone.