I saw a mouse in my garage. I took a plastic pail, filled it half full of water, duct taped the handle up, duct taped a small paint brush to the plastic roller on the handle, duct taped a yardstick up to the edge of the pail, and smeared a gob of peanut butter on the paint brush handle. The next day I found 2 mice in the water. They had run up the yardstick, jumped at the peanut butter, it spun around and they ended up in the water, eventually drowning. Worked great and cheap.