The Trip Trap Mousetrap is a humane mouse trap. It is a safe and friendly way to deal with unwanted house guests. This British-designed product has been especially developed to cause the least stress and no harm to mice when they are caught. The door drops automatically behind the mouse when it crosses the treadle to reach the bait. Clear plastic body means you can see at a glance when you have caught something. Plentiful ventilation points reduce stress to caught mice. Easy to bait and set - each trap is provided with full instructions for use. Mice carry a variety of diseases, should never be handled without protection.