Just One Bite II ills mice, roof rats and Norway rats. Norway rats and house mice may consume a lethal does in one feeding. The active ingredient is bromadilone, a second-generation anti-coagulant rodenticide that causes internal bleeding. Also treated with methioprene to protect the bait from infestation by insects. Contains rodent is favorite foods – grains and seeds. Death is delayed 4-5 days so there is no bait shyness… Read More or Full Review