I think something to remember is that not all those electronic devices are created equal. I have some older ones at the lake and they just don't work but as I say, they are old and bought by my grandfather. I am sure there are good ones and bad ones, I am looking for some of the good ones myself. That said when I am not at the cottage I probably have 40 or more traps set all over the place. I blanket the place every fall when the mice start looking for shelter and don't get any damage, just a few mouse corpses in fall and spring. I am not a fan of pesticides, the mice will eat that stuff and either die someplace in my home or go outside and get eaten by something else. Since I cannot control what they do when they eat poison I won't use it. At least with snap traps you know where the bodies are.