Wet & Forget 48 oz. Ready-to-Spray Hose End Mold & Mildew Stain Remover is a convenient cleaning solution for your outdoor surfaces. This ready-to-spray hose end sprayer tackles moss, mold, mildew, and algae stains on porch steps, window ledges, boat seats, play equipment, and more. It's bleach-free and has a pH close to neutral, making it gentle on surfaces. Simply spray and leave, no scrubbing or rinsing is required. The residual cleaning effect lasts up to a year or more, keeping your outdoor spaces clean and fresh. With a spray distance of up to 30 feet, it covers a large area and can clean up to 2,000 square feet.