Farnam Home & Garden 100504295 Just One Bite II Rat & Mouse Killer, Bars, 8-Ct. - Quantity 4 Quantity of (4) Just One Bite II, 8 Count, 16 Oz, Bars Kills House Mice, Norway Rats & Roof Rats In Stables, Barns & Storage Contain Bromadiolone, A Second Generation Anti-Coagulant For Indoor & Outdoor Use Mice Usually Consume A Lethal Dose In A Single Nights Feeding