Great idea, nothing worse than a dirty mouse. What's a good temperature for their bath water?All you have to do is put the peanut butter a couple inches below the rim of the bucket or container. They will fall in trying to reach it. Been used around the farm long before plastic bottles showed up.
Does have a new spin on the old way. Don't forget the few inches of water in the bottom.
A lady I knew who lived on an island up in the orkney isles, said they had a problem with rats, so they captured all the rats in similar traps, and left them for 4 weeks. By the end of the 4 weeks, most of the rats had died, and the remaining ones developed a taste for other rats and left their trash and other animals and crops alone. within 2 months the rat population was dead.