MiracleMist-Instant Mold and Mildew Spray Remover for RV and Boat s Exterior and Interior 1 Gallon removes stains and discoloration caused by mold mildew and algae. With MiracleMist s no-scrub formula it starts working the instant it touches the surface. Exactly how does it work? In the first stage MiracleMist Cleaner uses a complex detergent to lift years of dirt grime mold mildew and algae to the surface. After these contaminants reach the surface a light bleach solution instantly gets rid of the discoloration. Thanks to PREVENT! Technology MiracleMist Instant Mold and Mildew Stain Remover now prevents the recurrence of stubborn mold stains for up to 1 year making it the first product of its kind. There s no question that MiracleMist is the best cleaner on the market today. As we offer the most effective formula in every bottle most applications require less product to see results. As a result less product is used over time which is good for your wallet and the environment! Get MiracleMist for your RV and Camper siding awnings* and roof. --