The only thing that seems to keep them away is, believe it or not, yes they do sell it, Wolf urine. I had a raccoon highway through my yard, they took over at night fall. They even chewed the damn lid off my green bin. My yard was destroyed as they hunted for grubs. There is a hydroponic store on Kingston rd, west of midland. They sell 1litre bottles. I just put a little here and there and on the fence line, they rarely ever come around anymore and if they do, they move on quickly.
Just don't ask where they get the wolf piss from, lol