Anyone know of a deterent that works to discourage an unseen (but heard) animal from actually entering my home. He comes at night & gnaws loudly into the daylight hours. I've no idea what it could be, my neighbor guesses a groundhog. Could that be? There is a groundhog who lives under a steel shed on my property. If he is the little pest, I'm really ticked-cause I give him 2 apples a week which cost 60 cents each. I have no basement-just a subfloor.So he is able to scoot around on the subfloor. My dog cries & growls as this thing scoots from vent to vent. ANY help would be appreciated. Does a ground hog do this type of thing--I've tried mothballs.

Thanks, Mickey191