For serious mouse problems you can't go wrong with the Tin Cat Repeating Mouse Trap. The Tin Cat Mouse Trap is a live-catch trap that is easy to use, catches up to 30 mice at a time, and requires no setting. Simply place the trap along a wall where mice like to travel and it is ready to go. Inquisitive mice will enter the trap, triggering a lever that will trap them in a holding area inside. They can get in, but there is no way out until you release them.