Essential deodorizer for RV and Marine Waste Holding Tank! Eliminates odors and breaks down waste in RV and marine waste holding tanks. Cajun Max! RV & Marine Holding Tank Treatment is environmentally safe: Non-formaldehyde formula; Ultra-Concentrated; Contains Patented Odor Modifying Technology! Extremely easy to Use! 16 ounces treats up to a 40-gallons! Has a Sweet Mulberry fragrance!