Since I have rather squeamish family members, I try to make my feeders discreet. Their inside a large ziplock, inside a grocery bag, inside a large tupperware tub. The tub being the rubber seal kind where no air gets in or out, used to keep foods extra fresh. I highly recommend doing as I do if your parents dont approve of them in the freezer. Then clearly label with a sharpie "MICE/RATS". I doubt he will mind after all of that trouble. lol