The Big Cheese Humane Mouse traps are sold in pairs. This are live animal capture traps ideal for catching and transporting mice. The Humane Mouse Capture Traps come baited and ready to use. They are best used for indoor use. The two traps are already baited but good follow on bait for Mice is cheese, chocolate or raisons. The capture trap does not harm captured animals. This is a live animal trap. These traps have to be checked often (at least once a day), otherwise they stop being humane traps and become instruments of torture.