Star Brite Mildew Stain Blocker with Nano-Tech Barrier, 22-Ounce Nano-tech barrier prevents mold stains & mildew stains from forming Easy to use; just spray on area to be treated Lasts up to 3 months (interior areas) Non-toxic formula; safe for use around people & pets For use on fiberglass, vinyl, plastic, rubber, fabric and painted surfaces