After all these years this is still the best rat trap. This trap has the metal bait holder, which has provided far more kills than the trap with the yellow plastic bait holder. I have tried most of the newer easy to set plastic traps. While the easy set traps are nice and safe to set, they don't have a strong enough spring. The easy set traps have weak springs that cause far to many escaped rats and still alive wounded rats. This M201 Victor metal pedal trap is the one to buy. Put out about ten traps, baited but NOT set to kill for the first three days and re bait them each day. That way they won't get trap shy. Then on the forth day bait and set all ten traps to kill. You will have a bunch of dead rats. Clean and Re bait for round two. Avoid rainy days as the rain drops set these traps off.