You procure a long board, some bacon grease, some stiff paper, string, some water, a large rock, and a nice, large bucket or barrel (be sure to plug the bunghole). Once these items are gathered, you make a ramp with the long board from the rat/mouse hole to the top of the bucket. The rock is placed in the bucket, then water is added until there is only the smallest place on the top of the rock left above the water. The bucket is capped with the stiff paper and the string is used to secure it, as is done on a percussion drum. The bacon grease that you have is smeared from the rat hole, up the board and all over the stiff paper. The last step to this ingenious trap is cutting an X in the stiff paper with a knife.
Now your work is practically done, all you have to do now is wait overnight (no you can't watch, rats/mice get self conscious when they are being watched and spend all day in their den putting on rouge and fixing their hair instead of getting caught in your traps). What happens is the sensitive noses of the rats pick up the scent of the bacon grease coming from the entry of their lair, so they venture out, up the grease-laden board right onto the apparently stiff paper covered barrel, then they, if you remember, fall through the X you cut so skillfully right into the water. work the rest out yourself...
thats pretty clever! does it work on neighbours kids to? lol