The Victor Catch & Hold mice trap allows a catch and release system so mice can run free elsewhere. To use, simply bait with a small amount of peanut butter in the inside mouse bait chamber of the mousetrap and place it where mice roam in the house. Once you have a catch, just open the secured lid of the trap and let the mice out. Be sure to check with your local wildlife centers to abide by the laws in your area. Typically, mice like to travel along the walls rather than out in the open, so we recommend setting a mouse trap up against a wall. Try placing the Victor mouse trap in your living room, kitchen, attic, basement, or other areas where mice tend to frequent. Remember, this mouse trap catches up to 4 mice per set, which is ideal when dealing with a family of mice in your home. Due to the design, this plastic animal trap is perfect as an indoor mouse trap and outdoor rat trap.