B.E.S.T. . 50032 Black Streak Remover with Sprayer - 32 oz. Black Streak Remover, easily removes black streaks, tar and road grime build up on any vehicle with minimal rubbing but it is also great for tires, white walls, wheels and even your home gutters or a great degreaser Works super on cleaning your boat too you will wonder why you never used it before Finally a product that will remove the black streaks from your RV, motor home, or even your gutters and is safe for the surface you will find out why it is the number one Black Streak remove on the market Works great on fiberglass and painted surfaces when you have an investment like your boat or RV why would you trust anything but the BEST BEST products contain no acids or caustics which mean they won't harm or fade your decals or fabric and it is biodegradable so friendly to the environment so why settle for ordinary when you can have the B.E.S.T.