After rat trapping developed into a sick and twisted hobby, (set trap, snap, remove body, reset trap. SNAP!) I went for more drastic measures. I mixed 1 part peanut butter to one part plaster of paris. Add olive oil (not water) until it's a thick paste. Roll into balls and toss under coop and anywhere else nice animals can't reach. After one night, all the balls were gone, so I made more. Not so much as a nibble today. No more rats with a simple rat bait!