In the first bucket it's actually antifreeze because it prevents the mice from rotting. That particular trap is used in a cabin that is only visited occasionaly.
It's so easy to do, you probably have everything you need lying around already. But if you need instructions they are here: http://fivegallonideas.com/extremely-effective-mouse-trap/
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The wood just goes right to the ground so the mouse can climb up. The mouse can usually reach the peanut butter but the can actually rotates on its axle which the mouse is not expecting.
I was sick of rodents eating our expensive chicken feed so I put together one of these mouse traps from five gallon ideas. I think it's the easiest possible way to take care of mice without having to reset your trap after every catch.
Sorry if this has been covered before, I just wanted...