The Big Cheese Bait Station Refills are ready-for-use bait for the control of rats and mice in and around buildings. To be used in tamper-resistant bait stations. Moisture resistant bait blocks stay fresh and highly palatable in both wet and dry weather conditions. Universal block fits all bait stations. The advanced formula kills rats and mice. With 50% less poison.* This advanced formula has been specially designed with the highest quality food materials, flavours and preservatives to create a highly palatable bait that kills rodents in just a few feeds. The Big Cheese Home Choice range provides proven and effective control of rats and mice *using 50% less poison than previous formulations, making it the ideal choice for use in and around the home.