Valterra Odorlos Holding Tank Treatment | Unscented, 4 oz Bottles, 9-Pack

Odorlos skips the perfume approach to tank odor control and instead focuses on breaking down waste faster, so there's less material sitting around to smell in the first place. Each 4-ounce dose treats a tank, and this pack gives you nine of them.

• Accelerates breakdown of waste and toilet tissue to help prevent clogs
• Scent-free formula with no added fragrance to mask odor
• Rated effective across a range of temperature extremes
• Biodegradable, formaldehyde-free, and non-toxic formulation
• Nine individual 4-ounce bottles for repeated treatments
• Suitable for RV and marine holding tank or septic systems

Toss a full case in the basement storage and you won't be caught without a dose before your next dump.