We can't keep.skunks away from our house. They come make den next to furnace . So when turn heat on the house fill up with strong spunky smell. . We have block all the whole we able to see and get to. We life trap them related them to mountains miles away. . Thought we were rid of them. But now we turn heat back on the house stink really bad of skunks smell. It like they spray inside the house. . How do we keep them gone. ? Maybe we aren't getting rid of them all just think they gone because of the smell gone. For a month then it's back stinking us out of our house. What do we do. ?