Bio-Active RV Holding Tank Treatment

Eco-friendly Odor Control

Fragrance-Free Natural Waste Breakdown

Enzyme-based deodorizer with commercial-strength digestive power

Walex Bio-Active® is a fragrance-free liquid holding tank treatment powered by all-natural, eco-friendly ingredients. Designed for RVers who prefer a no-scent approach, Bio-Active® breaks down waste and toilet paper using bacteria and enzymes—keeping your tank flowing freely and odor-free.

Perfect for cassette toilets and porta-potties, the tip-and-pour bottle makes it easy to measure the right dose every time. With Bio-Active®, you get reliable performance without the use of harsh chemicals.


“I have tried many products for the tanks in my RV. This one has been around for a long time and does not get the attention like a lot of newer products. My thought is if a company has been around as long as this one, there must be a reason. The product has worked great as long as you follow the recommended amounts. A very good product I would recommend!”

-Steve, Walex Bio-Active Liquid verified purchase


Key Features

  • Fragrance-free, non-staining, and formaldehyde-free
  • 100% biodegradable and biocide-free
  • Breaks down waste and toilet paper naturally
  • Lubricates valves and seals to prevent clogs
  • Easy tip-and-pour dosing for all tank sizes
  • Available in 40oz, 68oz, and 168oz bottles​

Instructions for Use

Empty holding tank and add water to cover bottom of tank. Pour Bio-Active into holding tank through toilet. For best results, we suggest adding 1.25 gallons of water for every 10 gallons of holding tank.

Where To Buy

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About Bio-Active RV Holding Tank Treatment

40oz bottles – 12 bottles per case, 68oz bottles – 8 bottles per case, 168oz bottles – 3 bottles per case

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