Starbrite Heavy Duty Bilge Cleaner Starbrite Heavy Duty Bilge Cleaner is a easy-to-use, biodegradable cleaner that leaves boat bilges clean and odor free. This cleaner disperses and loosens sludge and grime in the bilge so that is can be pumped out. When using Starbrite Bilge Cleaner, make sure to drain or pump out your bilge in accordance with local regulations. Available in 32 oz and gallon sizes. The 32 oz bottle cleans up to 25 boat length and the gallon cleans up to 100 boat length. Feature