Star Brite® 85616 Ready-To-Use Mildew Stain Remover, 22 OzMildew Stain Remover quickly removes unsightly mildew stains from fiberglass, vinyl, plastic or painted surfaces. It begins working on contact. The special buffered formula will not harm vinyl upholstery or threads. It is a much safer alternative to using bleach, and can also be used around the home or in RVs wherever mildew stains are a problem. Removes mildew stains on contact without heavy scrubbing Simple to use; spray on, scrub lightly and rinse