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Marine Digest-It Holding Tank Treatment


Unique Camping + Marine

  • Wave Goodbye To Odors and Backups

    Powered By the Most Advanced Bacteria & Enzyme Formula Available

    • Digests Solid Waste and Residual Sludge In Holding Tanks
    • Eliminates Tank, Toilet, and Sanitation Line Odors
    • Treats Both Black and Gray Tanks
    • Works In Salt Water
    • Cleans and Maintains Tank Sensors and Level Gauges
    • Digests All Brands of Toilet Paper
    • Formaldehyde Free
    • Non-Toxic | Eco-Friendly
    • Safe For Your Family and the Environment
    • 100% Satisfaction Guaranteed
  • Keep Your Marine Holding Tanks Clean and Clear

    There’s nothing like the true relaxation and recharging that comes from a day spent out on the water. But nothing can ruin that serenity quite like having to deal with holding tank odors or backups. Unique’s Marine Digest-It is specially designed to eat odor and backups caused by solid waste and residual sludge inside the entirety of your holding tank system, lines and all. Marine Digest-It works with salt water and can be used in both black and gray water tanks. Marine Digest-It not only eliminates backups and odors but also cleans and maintains tank sensors as well as level gauges. Marine Digest-It also digests all brands of toilet paper. It is formaldehyde free, eco-friendly, and totally safe for you and the environment. Best of all, Marine Digest-It is backed by a 100% money-back guarantee.

    Boat Owners Across the US Already Put Their Trust In Marine Digest-It

    Marine Digest-It uses a highly effective blend of bacteria and enzymes that go to work quickly, ensuring that your marine holding tanks remain clog and odor free. Bacteria needs a food source to survive, and the waste in your holding tanks and lines is the perfect food source for the bacteria. Once the bacteria encounters a food source (the waste and odors in your holding tank and lines), it becomes active and begins to eat. As the bacteria eat, they produce enzymes. These enzymes help to break the waste down into more easily digestible portions for the bacteria so they can completely eat and digest the waste, leaving behind nothing but carbon dioxide and water. The bacteria in Marine Digest-It is also specially formulated to force out the bad, odor-creating bacteria (anaerobic) and replace it with good bacteria (aerobic) so foul odors are eliminated at their source without using any dangerous chemicals, masking agents, or strong fragrances.

    Maintain Both Black and Gray Tanks, Even In Salt Water

    Many products will require that you use a different treatment for each tank, but Marine Digest-It makes easy work of keeping both black and gray water tanks alike free and clear from foul odors of backups.

    Best of all, Marine Digest-It will also work just as effectively in salt water as it does in fresh or brine water. That kind of versatility is what every boat owner needs.

  • Looking For Help?

    Send Us An Email: support@uniquemm.com

    We Are Happy To Help!

Customer Reviews

4.9 Based on 18 Reviews
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United States United States

Major build-up

We’ve seen some over-all results after talking to Ricky and trying the product per his suggestion. Our sensors have never registered correctly since we purchased the boat last year. Still not 100% there yet, but we are talking years of neglect and mis-use so improvement will not happen instantly. Looking forward to doing per his suggestion and storing over winter with strong enzymes working in the tanks as it is stored. Will expect zero issues next season as a result. I say, give it a go, it’s a win-win.

Unique Camping + Marine

Carla, thanks for your order and for your review. Ricky is definitely The Wizard when it comes to our RV and Marine products, so I have no doubt you will get great results! Safe & happy sailing to you!

Mar O.

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.

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.

Terry M.

Seems to work fine

Seems to work fine

Frank C.

Good Compamy Good Products

I brought the marine digest-it holding tank treatment, which is twice as strong as the RV digest-it. Very satisfied.

Philip K.

Love that's it natural

I just started using "Marine Digest-It." I was having a party on my boat and put out special paper towels in the head for people to dry their hands. Unfortunately my friends are not familiar with a marine holding tank and flushed the towels. UGH! I was really concerned that this was going to be a problem. I used "Marine Digest-It" and had no problems at pump out time. I love the fact that the products are natural!

Charles M.

always works for us

We have been using Digest it for a number of years. it always controls ordors in our heads without all the perfumey stuff. Just recently got the bowl cleaner. So far, so good.

Ken P.

This product is the best

This product is the best I have ever used for my boats head and also used it in the bilge. It leaves no odor.

Jelene D.

Stinks No More!

LOVE, LOVE, LOOOOOOVE this product! Followed the directions for each head and presto, no more smell! I admire whoever came up with this bacterial combo to eliminate odors because it WORKS! We have a sensor problem in one of our heads and cannot wait to really put this product to its test. I'll gladly write again about the outcome once we know when the pump-out boat can come again, until then, we cannot run the test as we're living aboard and need the facilities! We had a mild smell which is now gone, but we're really hoping that whatever has munged-up our head sensor will be remedied by this product! I have total faith to be honest, but time will tell and I'll be sure to let y'all know! Buy it, it's worth it and environmentally friendly! LOVE IT!