Howdy, quick question - When polishing / Waxing your car are you all VERY careful to not get it on the black parts of the car i.e: water door seals, black bumper bits etc... Because my cup splitter has these white bits all over it now.. whats the best way to remove these?? - i dont know whether to cover it up with stuff like "back to black" etc, OR to use water or something and scrub it off!.. thanks all