My road runner sits out on our carport and I keep it covered with a 5 layer cover. My wife's cat's will work their way underneath the cover and leave their paw prints all over the car. I would prefer that they not even go near the car. I have read lots of idea's on how to keep the cat's off the car and some I've tried and some are ridiculous. I have tried vinegar in a spray bottle and re-applied often with no success. Do any of you have a logical answer for this other than building a shop to store the car or killing the cat's? Is there a chemical that will work? Thanks!