Motomco Tomcat Mouse and Rat Bromethalin Pellets, 5-Pound This product is intended for farm and agricultural settings Bromethalin is a potent acute toxicant Rodents stop feeding after eating a toxic dose so more rodents are controlled with less bait Kills anticoagulant resistant Norway rats, roof rats and house mice. Bromethalin is a potent acute toxicant. Rodents stop feeding after eating a toxic dose so more rodents are controlled with less bait. "Kills anticoagulant resistant norway rats, roof rats and house mice."