Hi Mh! that's one good thing my Dad actually did purchase -- instead of all that chemical weedkiller and chem bug spray he also bought.
I have one of those plug in repellers in the attic where I keep my lil' fridge. It really does seem to rid the room of bugs. We always used to have a problem with them in there. Also- the mice stay away from my foods in there during the Winter so I wonder if it also aggravates the lil' rodents too!