Concentrated, color-safe, biodegradable powder that removes mold, mildew, algae, bird droppings, sap and grease stains from boat covers, cushions, awnings, canvas, vinyl and many other surfaces. Mix with water: 4 oz makes 1 gallon, 12 oz makes 3 gallons, 65 oz makes 16 gallons, 5 gal makes 144 gallons.