The Nanoskin Autoscrub clay towel removes paint over spray, bugs, road tar, rail dust and industrial fall out effortlessly. Traditional clay bar works for about 5 to 10 cars but the nanoskin autoscrub clay towel can be used up to 80 cars. Always remove contaminants before polishing or waxing. Fine grade clay towel is ideal for well maintained cars. Simply fold this 12 inch x 12 inch towels in half with rubber polymerized coating facing out. Spray lubricant in a 12" x 12" section then rub the towel back and forth, then side to side. Wipe the residue with microfiber towel. The surface should be silky smooth and ready for waxing.