Mold Armor E-Z Multi-Purpose Pressure Washer Concentrate is ideal to be used on vinyl, brick, sealed concrete, stucco, painted wood and plastic. This pressure washer surface cleaner kills mold and mildew and gets a clean surface that looks like new. Mold Armor contains anti-corrosives to protect your pressure washer parts. This powerful amazing formula reinvents the pressure washer category with a whole new meaning to clean and provides a better performance than a pressure washer by itself. To use this as a concrete cleaner, spray surrounding plants with water using a garden hose. Next, add product to a clean pressure washer solution tank. Then wash surface with cleaner using a Low pressure spray nozzle and allow to work for 10 minutes. Rinse surface with water using a High pressure nozzle and spray surrounding plants with water using a garden hose after use. Finally, rinse pressure washer tank with water prior to storage. Keep out of reach of children and follow all directions carefully.