I made this same thread a few months ago, I ended up using the foil like Relativist said and it worked... I first tried the scented Critter Ridder and it did nothing, I watched the cat take a nap on a huge pile of it that spilled on my driveway when I was putting it out.. All I did was put foil all across the roof of my car and left it out in the driveway after a few nights the cat wasn’t seen on any other car that parked in driveway..
Shave the cat! then hang it upside down next to the car, as an example to other cats. I'm sure that will discourage them.
I didn’t crumple the foil, I just laid taped sheets together and left about 6 inches on each end and closed them in my car doors to keep it from flying off.. The foil was nice and tight and I haven’t seen any scratches yet..
I heard if you put your cars in the garage that it's much more difficult for them to get on your car. YWIA
Buy a bunch of rat traps, the glue kind. Place them all over your car hood. Your car stays clean, and the owner of the cat pretty much has to tear the paws off the cat to get them off. Freaking cats.....
da-glyde.. ah, I guess almost every topic has been posted on this board it seems! Thanks for the info.