The Bass Pro Shops Heavy-Duty Boat Soap is a great all-purpose boat soap that will clean your whole boat from the trailer to the deck. Formulated to work in freshwater and saltwater, its concentrated for maximum cleaning power ensuring it cuts through dirt and grime. Plus, the low-sud formula saves water and makes it easier to rinse off. Biodegradable. Sizes: 32 oz., 128 oz. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Size: 32 OZ. Type: Cleaning & Protectant.