[Blue Thunder]

I use an old school method. Its a 5 gallon bucket with a Coke bottle covered in peanut butter mounted on a straight piece of coat hanger. Attach a piece of wood as a ramp. Put a couple of inches of automotive anti freeze in the bottom. Mice walk up the ramp, out onto the bottle and the bottle spins dropping them into the anti freeze. They drown and the antifreeze embalms them until Spring. No smell at all.