Pied Piper – HALT 50 Wax Block Rat & Mouse Bait – 5KG – Professional Use?A ready to use block bait, containing Brodifacoum (0.005% w/w) for use as a rodenticide for the control of rats and mice indoors and outdoors around buildings(in urban and agricultural buildings) only by professionals for the protection of public health, stored products and materials.