Bothered by water spots on your windshield, dangerous road film, or silicone buildup? Spot-X Hard Water Stain & Spot Remover cleans stubborn hard water stains from your vehicle glass. Whether the water stains are caused by acid rain, salt water, sprinklers or well water, Spot-X will work where other cleaners have failed. While Spot-X cannot be used on auto paint it will not harm the paint if it drips on it. Just don't rub it into the paint. Simply rinse off with water. Click for Larger View Do not use on mirrors coated with anti-fog treatment. This can be found in your owners manua.l Automobiles Trucks SUVs School Buses Tour Buses Vintage Cars Service Vehicles Ambulances Police Cars Fire Trucks * Chrome must be triple plated, Spot-X may scratch chrome if it is only single or double plated. Also some Marble surfaces are very soft and prone to scratching. We recommend testing in an inconspicuous area for scratching. We cannot guarantee the use of Spot-X on Chrome or Marble because of the softer qualities of these materials. Spot-X does not work on Powder Coated or Color Anodized Surfaces. Do not use on mirrors that have anti-fog coating, this can be found in your users manual. Please see our guarantee for more information!