Cat Misbehaving on Brick--How to Clean and Stop?

Cats will lay on gravel driveways too, try odour as a deterrant instead. Cats dislike the smell of oranges or other citrus fruits. Find an airfreshner with those smells and place them around the area, purchase an orange scented cleanser and spray that all over the brick area. Hopefully she will get the hint that the area is undesirable (which is why you should never clean a kitty litter pan with citrus cleansers!) Good luck!