Removes mildew stains on contact without heavy scrubbing. Simple to use; spray on, scrub lightly and rinse off stains. Safe for use on fiberglass, painted surfaces, rubber, plastic and vinyl headliners, bolsters and upholstery. Special buffered formula will not harm vinyl upholstery or thread. Ideal for home or RV use, too. Does not weaken fabric or thread. Formulated specifically for use on marine upholstery; will not harm vinyl or stitching.