A favorite of the Ship to Shore staff, Instant Black Streak Remover from StarBrite does just that. The no scrub formula instantly removes black streaks caused by water runoff. Use it on fiberglass, metal or other painted surfaces.
• Instantly removes black streaks caused by water run off
• Safe for use on fiberglass, metal and painted surfaces
• Just spray on, let work and hose off
• Contains no harsh acids or alkalies
• Cleans by patented process of chelation