The new 303 Mold and Mildew Cleaner+Blocker is a cleaner for use getting rid of mold and mildew on any water-safe surface, including vinyl and fabrics. It prevents future mold and mildew stains from occurring too. To use, simply spray it on, scrub it and wipe it off. It’s safe for use on vinyl, fabrics and painted surfaces. The bleach-free, dye-free formula has a fresh scent and contains no harmful vapors. Its formula is biodegradable and safe for marine life.