Revive™ is an easy to use spray-on contractor-grade mold and mildew stain remover for use on wood, plastics, vinyl. tile, grout, concrete, stucco, fiberglass, shower curtains, siding and walls, and other surfaces. Revive™ works on contact on mold and mildew stained surfaces. This product does not contain any abrasive materials and will not scratch material surfaces when used as directed. This product is not flammable.