Get the ultimate solution for rodent control in and around buildings with the Pack of 5 Rentokil Mouse and Rat Killer Blocks. These ready-to-use bait blocks are designed for use in tamper-resistant bait stations, ensuring a safe and effective approach to pest management. The new and improved formulation guarantees maximum potency, capable of killing up to 20 mice or eight rats in a single feed. With these weatherproof blocks, you can trust that your rodent problem will be quickly and effectively resolved. Hard block for indoor or outdoor use.