Remove existing graffiti from the most difficult surfaces, without damaging them, while being safe and friendly to the environment. Removes graffiti from brick, metal, glass, wood, and painted surfaces. Highly effective and easy to use. Biodegradable. No damage to the surface. Apply with a brush, roller or spray directly onto the graffiti, and leave on for several minutes. Brush area with a nylon scrub brush. Graffiti will start to dissolve immediately. Coverage is up to 150 sq. feet per gallon.