This humane Redecker mouse trap is very simple to use. The genius design features a funnel, which is easy for a mouse to get down but impossible to get back up. The wire cage construction makes it easy to see when you have caught a mouse. The clever trap door allows you to humanely release the mouse and to add bait. Once the mouse trap has been set, it is important to check it frequently. If a mouse hasn’t been caught after a couple of days then we suggest offering a different bait... we have great success with peanut butter and chocolate.