Black Streak Remover - 32oz303® Black Streak Remover will keep the siding of your RV looking like new by removing unsightly black streaks with ease. These black streaks occur naturally when dirt and rubber material from an RV’s roof come off after miles of traveling at high speeds. The powerful formula in 303® Black Streak Remover pulls this material and dirt from the surface and allows it to be wiped away, leaving a clean, streak-free finish.Features:Removes hard-to-clean black streaks and dirtLeaves a clean, streak-free finishBiodegradable and marine safeGreat for use on RVs, Campers, Pop-Ups, Motorhomes, and BoatsSafe on fiberglass, vinyl, metal, and painted surfacesDirections:Shake well before use. Use only on dry surfaces. Spray the product directly on the black streaks. Allow the product to remain on the surface for 2-3 minutes. Gently scrub and then wipe off with a wet towel, microfiber, or sponge. For stubborn stains, repeat as needed.