Wet & Forget 800003 Stain Remover, 0.5 gal, Liquid, Slight Almond, Blue

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover, 0.5 Gal Bottle stays clean for up to a year or more. No scrubbing, no rinsing, no bleach. Easily remove unsightly black and green stains from all your outdoor surfaces. Apply to the surface and you're done. Works with Mother Nature to gently clean over time. Safe around plants when used as directed.