The Big Cheese Bait Station Refills are ready-to-use bait to be used in tamper resistant bait stations. Single-feed rodent bait to be used in conjunction with a secure, tamper resistant bait station for the control of rats and mice. Ultra Power Block Bait from The Big Cheese delivers fast and highly effective control of rodent pests using single-feed bait technology. It combines proven palatability with the necessary amount of active ingredient to deliver a lethal dose to rodents in one feed. Rodents may continue to take bait for up to 4 days.