Mice like anything that's going. It's normal to put raisins in mouse traps as the raisins don't go off. We get field mice coming in for the winter. They won't go in the living area just the attic. I screw the traps down and check at the start of the winter to see if there are any in the traps. They never need rebaiting. I haven't had any for 2 winters as I stuck at it and eventually I killed them all one winter. There were no young ones who knew where there was a nice warm attic. You have to screw them down as occasionally you will loose a trap when you only catch a leg and they crawl of with the trap. Lost one mouse trap and one rat trap because I didn't screw them down. I did see a 3 legged rat about 2 weeks after the rat trap went missing! The rats found the apple pulp from my cider production in the compost bin very acceptable. Pee is a very good compost activator but may also put the rats off...hopefully!..and mice don't actually like cheese......