Maintain an odor-free RV holding tank with Valterra Odorlos Holding Tank Treatment. This powerful nitrate-based formula works by accelerating the natural breakdown of waste and toilet paper while helping prevent the formation of odor-causing gases. Safe for RV, marine, and septic systems, it is biodegradable, non-toxic, and completely free of formaldehyde. The concentrated formula is effective in both hot and cold conditions and also helps lubricate tank valves for smoother operation. With a large 168 oz bottle, itâs ideal for extended use or refilling smaller containers, giving you long-lasting, eco-friendly tank care. Features:• Accelerates waste breakdown for improved tank performance• Helps eliminate odors at the source for a cleaner experience• Eco-friendly formula supports safe and responsible use• Lubricates valves to maintain smoother system operation• Performs consistently in extreme temperature conditions• Large capacity bottle supports long-term use and refilling needsSpecs:• Brand: Valterra• Model Number: V77004EN• Size: 168 oz bottle• Formula Type: Nitrate-based, scent-free• Usage Ratio: 4 oz per 40 gallons (1 oz per 10 gallons)• Compatibility: RV, marine, and septic systems• Safety: Biodegradable, non-toxic, formaldehyde-free• Application: Black and grey water tanksNote: Replacing V77004 Breaks down waste fast Large 168 oz size Odor eliminating formula | Odorlos 168 oz Holding Tank Treatment in Black