Graffiti Remover Aerosol is a USDA authorized extra heavy duty cleaner which will remove all types of ink without damaging surfaces. Unique gel base stays in place to clean vertical and irregular shapes. Contains blended solvents for removing most graffiti markings found in public places. Markings found on road signs, billboards, sidewalks, pavements, bridges, busses, trucks and buildings are easily removed. This product will not harm aluminum, steel, glass, concrete, porcelain, brass, chrome, marble, brick and most enameled surfaces. Be sure to pre-test in hidden areas for surfaces susceptible to solvent damage such as plastic, painted surfaces, rubber, asphalt tile and other synthetic surfaces.