1-Step Pontoon Cleaner Concentrate (1 Gal Makes 5 Gal)Wampole's 1 Step Pontoon Cleaner is a unique blend of powerful organic acids which have been inhibited and formulated to penetrate oily surfaces, brighten aluminum and clean masonry without harming the surface. Works well on: Aluminum Pontoons Fiberglass boats (for mud stains) Tanker trucks HVAC coils Concrete & Masonry Safe to use around: Plastic Rubber Painted surfaces Directions: Mix 1 part cleaner with 4 parts water Spray on a dry surface from