Removes mold, mildew, algae stain, tough dirt,oils, some food stains and blood stains. Recommended for use on awning, canopies, tents, patio furniture, cushions, umbrellas, spa covers, tarps, boat covers, camping gear, vinyl, plastic and fiberglass. it is gentle to skin and has no harmful vapors. Just add water to the biodegradable, non- chlorine powder and work the solution into the soiled area. One 12 ounce jar makes three gallons of solution. one gallon covers up to 150 sq ft.