I've been dealing with cats for a while but we recently moved into a new house and theres a hole in the bathroom we cant get to to board up. The issue is we have a napoleon cat who is the only one small enough to get into the hole and we dont know where it goes. I've been trying to lock the cats out of the bathroom so she wont get stuck but everytime I open the door all of the cats are sitting there trying to break in. Any suggestions on getting them to stay away from the bathroom or better the entire hallway