The bucket, when adjusted properly, is very effective. One friend who used this system at a ranger cabin in the Cascade mountains said that it caught so many mice at night that there were times when there were too many floating in the bucket for newcomers to drown. Not that this is fun for anyone, but the buckets do work. I imagine if in one room one trap is on the floor and the can is supsended over the bucket that the trap on the floor is easier for the mouse to get to initially. But once that trap has sprung, that is it, and unattended it will catch no more mice. The bucket will keep on working for a while. The point of this trap is to work while the cabin has no one there to reset mouse traps.

SRS