Note that I live in a new house in attics where the power grid is well distributed in the hollow walls of the ceiling, and centralized. It is important because it is on electrical son rests magnetic efficiency of the system by manufacturer.
Nevertheless, I continued to combine with fags at the scene of way and bags souricide.
I believe that the device interferes especially rodents for establishing their nest. If the nest is already on, it takes the pups are old enough to flee. The unit is not noisy in my opinion, you can set the emissions for rodents or spiders, with continuous or variable rate.
I would not fail to report back bugs ...