Walex Bio-Fresh Liquid Holding Tank Treatment, Ocean Mist 32 oz

Walex Bio-Fresh is the liquid version of the best-selling Bio-Pak, made for those who prefer a pour-in treatment over pods. Its powerful enzymes liquefy waste and stubborn toilet paper, keeping your holding tank sensors working and your system running smoothly, no RV-grade toilet paper required.

The non-staining, water-soluble formula neutralizes odors with a refreshing Ocean Mist scent and controls smells for up to seven days. It's septic-safe and campground-friendly, and this 32 oz bottle treats black tanks from 2.5 to 40 gallons.