Koch Chemie Interior Scrubber is a cleaning sponge for car interior surfaces. This product is double sided and each side has a type of fiber that has the power to remove heavy and old pollution. This product is easy to use and does not require much skill or experience. It is enough to spray the desired detergent on the surface and wait for a while until the dirt loosens, then rub the surface with a sponge to remove the stains, and finally wipe the surface with a microfiber towel. This sponge is high quality and it will serve you for a long time. Don’t forget that you should not use this product on piano parts inside the cabin.