The Victor Catch & Hold Mouse Trap is designed to humanely catch and release up to 4 mice per setting. Using it is easy - simply bait, place, and release once you have made a catch. This innovative, non-lethal mouse trap is designed to humanely catch and release mice without harming them. Simply apply bait in the designated bait cup and place the trap indoors or outdoors where youve seen activity. There is no setting required. The see-saw design lets mice into the trap and once they go past the threshold, mice cannot escape. Catches up to four mice per setting and the transparent lid design makes it easy to see when you have caught a mouse. Once a catch has been made, the rear door opens for offsite release, so you never have to touch the rodent. The top of the trap can also be removed for easy cleaning when needed. Plus, this trap is safe for use around people and pets when used as directed.