If you need to quickly get rid of a mouse, but don't want to kill it you can make a humane mouse trap with a finger of kitkat, a sandwhich box and a tray or large peice of cardboard (or anything else to place underneath the trap)Stand the sandwhich box onto the tray or cardboard and prop the centre of it up with the kitkat finger (you may need to wrap a bit of foil around the top if it will not stay or is not long enough) When the mouse nibbles the kitkat it will either snap or fall over,trapping the the mouse under the sandwhich box. Pick it up and carry it far away from your house then release it. This trap works every time and normally it takes about 10mins for the mouse to be lured out and into the trap.