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RV & Marine

Marine Digest-It


Guaranteed To Work + Made In The USA

  • 16 Treatments
  • Eliminates Tank Odors
  • Works In Black and Gray Tanks
  • Works In Salt Water
  • Liquifies Solid Waste In Tanks
  • Cleans and Restores Tank Sensors and Level Gauges
  • Digests All Brands of Toilet Paper
  • Formaldehyde Free
  • Non-Toxic and Eco-Friendly
  • Safe For Your Family and the Environment

     Marine Digest-It Holding Tank Treatment

    | Powered By The Most Advanced Bacteria & Enzyme Formula Available | 


    This natural product turns everything in your holding tanks into liquid so you'll never have odors or back-ups again!

    Download and print instructions for Marine Digest-It

    Marine Digest-It Holding Tank Treatment is a natural product that packs a powerful punch. Using billions of microbes, Marine Digest-It will turn everything in your holding tanks into liquid, including household toilet paper! This inexpensive and effective natural cleaning product completely eliminates odors and clogs in your boat's holding tank and is completely safe for the environment and waterways. If you're earth conscious, you'll never have to sweat about putting harsh chemicals in your tank again - every ingredient in Marine Digest-It is safe for humans, animals, and the environment. It is also a great solution for ridding your bilge area of odors. If you don't love it, we'll give you a full refund!

    100% Satisfaction Guaranteed!

    Customer Reviews

    Based on 19 reviews
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    • Reviews

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    Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Ricky Stewart

    Totally amazing.

    After two years of the corrosive, stinky, awful Blue Stuff That Shall Remain Nameless (I'm looking at you, West Marine) we were ready for a change-- who wants a stateroom that smells alternately like a hospital and... well, you know. UNIQUE IS AMAZING! We've used it for a grand total of two weeks between pump outs and there is NO SMELL in the head, near the tank, ANYWHERE. I let it sit in the head before flushing it through the first time and even the macerator seems to be working more smoothly. I can't recommend this product enough-- stop stinking up your life, stop putting harmful chemicals into your boat/home/environment, and START USING UNIQUE! :)

    Robin L

    how would I know if it's working?

    I can't see inside my tank and have no clue if it is working or not. When I did have questions regarding usage, customer service was fast and pleasant.

    Ricky S

    Great stuff!

    Great stuff!

    Ricky Stewart

    The Best!

    I’ve used everything and this is the only one that keeps the odors down and my sensors working PERFECTLY!

    Bruce M.


    Marine Digest-It works great no more smell and it appears that is is breaking up the solids in the tank for a cleaner tank.