Mouse trap
I've pinched this off a social media site as its very apt.
We have mice in either our shed or the greenhouse (despite having a cat!). For several days now my OH has been trying to trap the latest one. Despite all sorts of tricks, the mouse (or some other unknown creature) has been taking the bait and leaving the trap untriggered. He loads it with peanut butter and even adds a few bird seeds. Whatever it is is playing games as the trigger is very sensitive but even the seeds have been taken out the butter and the trap is still in place.