The Iosso Mold and Mildew Stain Remover is Color & Fabric Safe! Removes mold, mildew, algae stain, bird droppings, spider droppings, tannin (leaf) stain, tree sap, tough dirt, grease and oil, some food and drink stains, blood stains and more. Recommended for use on awnings, tents, boat covers, canvas, cushions, carpeting, umbrellas, camping gear, inflatables, fabrics, vinyl, plastic and fiberglass. It is non-chlorine, biodegradable and has no harmful vapors. One 4 oz. jar makes one gallon of solution. One gallon cleans 150 sq. feet. Easy to carry, easy to use. CONCENTRATED POWDER...MAKES A LOT!