We used to have chickens and the problem with having chickens is that they attract rats. I hate the idea of kill traps and poisons nor do I like the idea of the Have-A-Heart traps because then I have to go a while from home to release them and with the number of them running around outside I don't have the time. I was wondering if those electronic ones that you plug in and make a high frequency sound that is supposed to keep rodents away would hurt my ferrets? If so any other ideas? Not sure if I put this in the correct section if not sorry.