Talon Rat & Mouse Killer is a ready to use bait for use in & around buildings. It controls rodent species which are resistant to warfarin and bromadiolone. Wax blocks are perfect for damp or dry areas, are not too messy and can be nailed in place. Active ingredient Brodifacoum is the worldâ€™s most effective rodenticide. Kills rats and mice in just one feed. 4 Baits 72 grams total.