Color and Fabric Safe! Removes mold, mildew, algae stain, tough dirt, oils, food stains, and blood stains. Recommended for use on awnings, canopies, tents, patio furniture, cushions, umbrellas, spa covers, tarps, boat covers, camping gear, vinyl, inflatables, plastic and fiberglass. It is gentile to skin and has no harmful vapors. Just add water to the biodegradable, non-chlorine powder and soak the solution into the soiled area. One 12 ounce jar makes three gallons of solution. One gallon covers up to 150 square feet.