Does anybody know if the electronic pest devices really work at keeping mice out & away? If so which one?

Answer 1

i personally have always had concerns about them, due to not knowing what effect they might have on humans and pets,
there is a good ariticle about it at this site
http://www.ipmofalaska.com/files/electronicpestcontrol.html

as to the different brands, you can research that on a search engine,
also, a natural approach to pest control often works great, here is one site that has something for mice,
http://www.critter-repellent.com/mice/mice-control.php

and you can find many others by typing in "natural mice control"

i would try a natural method before an electronic one, just my opinion