We have raccoons who have found the secret passage (opened cat door) into the garage. And once in the garage they are eating the bird seed. The bird seed is now in rubber containers. But the raccoons might be coming back, is there a way to keep them away from the cat door. Euthanizing them is an option over the weekend when the wife is away. But in the mean time is there a way to keep the raccoons away from the garage. Someone said urinating by the door will work, is this accurate?