Flitz MAC 20206 Mold and Mildew Stain Remover 16oz Removes difficult stains caused by mold, mildew, bird droppings, dirt, leaves Safe on fiberglass, clear vinyl windows, plastics, canopies, epoxy & other composite resins Safe to use indoors or outdoors Environment friendly Non-Hazardous Removes difficult stains caused by mold, mildew, bird droppings, dirt, leaves Safe to use indoors or outdoors Environment friendly Non-Hazardous