Even if the mice have above average balance and agility I still give em a 1% chance to be able to eat the bait and NOT fall in the bucket.
On the bottom of the bucket is .25" of canola oil to reduce the ability they can leap out of it.
A toilet paper roll was added to increase the probability of them falling in.
I used tape to attach the graham cracker peanut butter sandwiches to the yogurt container and toilet paper roll.