Eventhou I am a little OTT about my home being clear, I still got mice... I was completely shocked, and rushed out to get every and any device to get rid of them. Mice taps and glue mats killed a few but they kept coming back! I was a my wits end, when I started checking out plug in devices and this is by far the best. I have had it plugged in for 48hrs, and have has no signs of mice in traps or any scatching... I hope this is the last of them, fingers crossed.