Dumond Watch Dog WipeOut Graffiti Remover is a non-drip, gel formula for easy and safe removal of graffiti from porous surfaces including - brick, stone, concrete, cement, pavers, terrazzo, etc. Effective on spray enamels, markers, ink, crayon, shoe polish, lipstick and most other graffiti marks and stains. Apply liberally to effective porous surface. Allow to dwell for approximately 30 minutes. Power wash with approximately 1,500 psi.