Mold Armor E-Z Multi-Purpose Pressure Washer Concentrate with Microban 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.