Clay bar seems to take time and labor. Found this product from Eagle 1, and it does what clay does, but super easy, and quick. You just spray some detailer (lube) and wipe it like you were washing a car by hand. My CE that was waxed 6 weeks ago was full of little bumps, and needed clay. After the mitt, and wax, it's as smooth as glass. When done you just rinse the mitt with water to use it next time. Got mine at Advance Auto, $25. Says good for 7-10 times. Eagle 1 has video on line. Go and rub your car, and see if it's full of little bumps. Best product I've bought in a long time.