I had bought two traps -- when you see one rat, there's usually another one close by. I've used these traps in the past (about 4 years ago) and they worked as they were supposed to. Well, I put another trap out Thursday evening; I checked Friday morning and there was nothing in the trap; but my son came over later to pick up his dog and he went to check -- and there was a rat -- again, not dead. Neither one of think this should be happening and he had to drown it. That's twice now. I contacted the company (Tomcat) by email today and voiced my displeasure. I know it's just a rat; but that's inhumane. Can't wait to find out what they're going to say. Did they change the trap design a little ?