We do this with rats around the homestead but you have to put water or they will jump out. Also after a couple good nights they will not go near it again since they are smart enough to learn so we have to change it up in location and bait. I would pin it in place so it would not turn for the first couple nights allowing them to get comfortable with it and then unhook it so I would get a lot of them at once and the move it and rebait with something else. Ended up going to a pellet rifle with night vision scope though to clean out the rest of the large smart ones. Great post though these stairway to heave traps are one of the better options out there.