Permatex Spray Nine Mold & Mildew Cleaner removes mold and mildew stains, while controlling mold and mildew on indoor and outdoor surfaces. The fast-acting formula only requires 3 minutes of contact time, while competition requires a full 10 minutes. Ideal for cleaning sinks, tubs, showers, glazed tiles, toilet exteriors, floors, garbage pails, patio furniture, vinyl siding, boats, RVs and camping equipment..