Walex Fresh-Pak RV & Marine Holding Tank Deodorizer, 30-Pack

Walex Fresh-Pak holding tank treatment keeps your RV or marine black tank fresh and flowing. Each drop-in pod quickly breaks down waste and stubborn toilet paper, helping prevent clogs and backups and keeping tank sensors reading accurately.

The septic-safe, campground-friendly formula controls unpleasant odors with a clean fresh scent. Simply drop in a pod with no messy spills or stains. One pod treats tanks from 2.5 to 40 gallons, making this 30-pack tub ideal for RVing, boating, boondocking and portable cassette toilets.