Description
Walex Bio-Pak Drop-Ins are designed to deodorize and maintain RV and marine holding tank systems with a simple, mess-free application. Each water-soluble packet contains powerful enzymes that help break down waste and toilet paper while controlling unpleasant odors. Continued use helps maintain the performance of pipes, valves, and seals, with no need for special RV toilet paper. Safe for septic systems and campground-friendly, Bio-Pak is suitable for black holding tanks ranging from 2.5 to 40 gallons.
Product Benefits
✔ Powerful Enzyme Formula
Helps break down waste and toilet paper while supporting efficient holding tank performance.
✔ Controls Holding Tank Odors
Helps deodorize black holding tanks to reduce unpleasant odors during travel and storage.
✔ Easy Pre-Measured Drop-Ins
Water-soluble packets eliminate measuring, pouring, and messy spills for quick application.
✔ Safe for RV & Marine Systems
Suitable for black holding tanks from 2.5 to 40 gallons and safe for septic systems and campground use.
✔ Helps Maintain System Components
Continued use helps keep pipes, valves, and seals working smoothly for reliable holding tank performance.
How to Use
- Fill the holding tank with the recommended amount of water.
- Drop one Bio-Pak packet into the toilet or holding tank.
- Flush with water to dissolve the packet.
- Use one packet after each tank emptying or as needed to maintain odor control and waste breakdown.

























