On a damp cloth or paper towel, apply some non-abrasive, low-bleach detergent. Clean the surface by wiping in circular motions and rinse immediately. For difficult stains such as metal traces and rust, pour a small amount of this detergent on the surface of the dish sponge, rub lightly and rinse immediately. We recommend that you clean your Calisco surface at regular intervals in order to preserve its first day appearance.