We ordered these in Florida after a neighbor tore out a building full of rats and they invaded the neighborhood.  Standard rat traps for the most part but ours have had very heavy use and all still work.  Killed zero animals other than rats (we have lots of wildlife here and I'm surprised we haven't killed any lizards yet.)  All clean kills to the neck so far.  No mess, no suffering.  Not much more one could ask for in a rat trap.  Easy to set and very powerful.  Using stale marshmellows covered with peanut butter as bait and killing far more rats than we'd like to see,