This heavy-duty, acid-based cleaner is specially formulated to tackle red clay, yellowing, and organic stains on fiberglass hulls, painted surfaces, wood, and other hard marine materials. Whether it’s caused by sprinkler systems, railings, tree runoff, or battery corrosion—Wet Willy’s Hull Cleaner cuts through it all with no nonsense and no mercy.
It’s ideal for removing yellow waterline stains and tough grime from boat bottoms. For aluminum pontoons, rails, or marine metals, reach for Wet Willy’s Pontoon Cleaner & Brightener instead.
Because nothing gets hulls hollerin’ like Wet Willy.