House wash--gets rid of mold and algae! Wear goggles! Wear old clothes! Just attach it to your garden hose. When empty simply refill with 50/50 bleach/water plus a half cup of laundry detergent and do it again and again...also effective on decks and plastic patio furniture. Pretreat any nearby plants with a coat of fresh water before and after using the bleach spray. Click on image for link.
