Kills roof rats, house mice, meadow voles, and warfarin-resistant Norway rats. Norway rats and house mice may consume a lethal dose in a single night's feeding. Contains the active ingredient bromadiolone, a second-generation anticoagulant that causes internal bleeding. Palatable formula with grains and seeds. Features nibble ridges to promote rat and house mouse chewing. Includes center mounting hole for easy application in bait stations. Ideal 2-ounce size for easy placement in bait stations. Available in 8-pound pails with 64 chunks and 12-pound pails with 96 chunks.