Bio Kleen M00505 Black Streak Remover, 16-Ounce Allows you to remove those black streaks and stains from boats, trailers and RVs with ease Just spray it on and wipe it off, it's that simple A multi-purpose cleaner/de-greaser designed to remove soils and marks with a minimum effort on a wide variety of hard surfaces Leaves surfaces streak-free and sparkling clean No rinsing needed and residue free