I’ve used one with some success myself (there were two of them and the second mouse was much smarter and eventually had to be dealt with “manually” via quick reflexes and a shoebox). Food goes at the end, mouse goes in, weight sets off the trap sealing the mouse inside. You can then set him free to go on his mousey way far far away from your house. You can then just rinse the food and mouse poop out and use it again; beats the hell out of cleaning mouse guts off a non-humane trap.