Do not rub too hard. / Do not use the product when sand or dirt remains on the product, vehicle body or window glass. Doing so may cause scratches. / Stop use if too dirty or fibers are hard. / Do not wring or tug forcefully. / Do not use chlorine-based detergents or bleach. / Keep away from fire and other sources of heat. / Do not use this product for purposes other than its intended purposes.