I have mice coming and going out of my garage. I noticed a lot of feces so I put one of these out. Put the peanut butter in it, which I had to change every few days because it would get crusty, turned it on. Nothing. No mice. Its been 2 months and yesterday I found a dead mouse that I ran over with my car, in the garage. Not in the trap but 20 ft away, nowhere near the trap. I'm a little disappointed because I followed the directions accurately and with 200+ 5 star reviews, I thought it would work.