Walex Toi-11532 Bio-Pak Holding Tank Deodorizer - Fresh Scent Pack of 2. This Walex deodorizer is ideal for RVs and boats and removes odors and breaks down waste and paper. The waste digester is biodegradable and Formaldehyde-free and comes in a prepackaged portion control- No spills. These waste digesters are sure to be a beneficial addition to your RV or boat. There is an easy to use slide zipper bag for easy storage. Finally there is an all-natural waste digester that deodorizes and breaks down waste in an environmentally friendly manner beneficial to septic tanks. Try Walex Toi-11532 Bio-Pak Holding Tank Deodorizer - 2 Pack Fresh Scent for an added freshness in your RV or boat. Features of Walex Toi-11532 Bio-Pak Holding Tank Deodorizer - Fresh Scent Ideal for RVs and boats Removes odors and breaks down waste and paper; Cleans sensors and lubricates valves Biodegradable and Formaldehyde-free Prepackaged portion control- No Spills Quantity: 2 Pack Package Contents: Walex Toi-11532 Bio-Pak Holding Tank Deodorizer - Fresh Scent Walex BIOPP2: Toi-11532 Bio-Pak Holding Tank Deodorizer - Fresh Scent Pack of