My dog had been chasing a roof rat around in the yard for 2 weeks, she couldn't catch him cause roof rats like to hang out up in the trees. The instructions on the zapper say to put food in it and not turn it on for a few days. Let the rat get comfortable around the new object. I have no patience and I put it out in the shed and turned it on. The second night I had my dead rat. Bought 2 zappers for the warehouse at work and in a couple weeks we killed the entire family. 2 adults, 3 teenagers and 2 babies. No one is eating the food now so we think we have them all. Expect more will move in when it gets cold though.

The zapper is not only the most humane way to kill rats and mice it is the most effective and there is no blood and guts. Well worth the money.