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🚐 Keep your RV fresh & clog-free—because your adventure deserves the best!
Unique RV Digest-It Ultra Liquid is a bio-enzymatic, ultra-concentrated RV toilet treatment that delivers 32 precise doses per bottle. It rapidly breaks down waste and toilet paper, controls odors, and prevents buildup and clogs in black and gray holding tanks. Safe for all tank components and designed for high-temperature RV use, it also includes expert support through the Unique Cares program, making it the top-rated choice for maintaining a clean, odor-free RV septic system.

















| ASIN | B0D5DPT2BB |
| Best Sellers Rank | #134 in Automotive ( See Top 100 in Automotive ) #1 in RV Tank Sanitation Chemicals & Cleaners |
| Brand | Unique |
| Brand Name | Unique |
| Cleaning Agent Formulation | Detergent |
| Container Type | Bottle |
| Customer Reviews | 4.6 out of 5 stars 12,903 Reviews |
| Global Trade Identification Number | 00736683009725 |
| Item Form | Liquid |
| Item Highlight | Strong easy-measure liquid controls odors & quickly digests waste/toilet paper; routine RV holding tank treatment, 32 oz |
| Item Volume | 32 fluid ounces |
| Manufacturer | Unique Manufacturing & Marketing |
| Material Feature | Scented |
| Material Features | Scented |
| Material Type Free | Bio-enzymatic liquid formulation |
| Model Number | 417-AZ |
| Number of Items | 1 |
| Part Number | 417-AZ |
| Product Benefits | Helps break down waste and toilet paper, Helps reduce buildup that can lead to clogs, Maintains tank performance with routine use, Supports odor control in holding tanks, Supports smoother tank emptying |
| Recommended Uses For Product | Use regularly in RV black and gray holding tanks to support waste digestion, odor control, and ongoing tank maintenance |
| Scent | Ultra Easy-Measure |
| Size | 32 Fl Oz (Pack of 1) |
| Special Features | Bio-enzymatic digestion formula, Compatible with black and gray tank systems, Designed for high-temperature RV conditions, Safe for seals and valve components, Ultra-concentrated liquid with measured dosing |
| Special Ingredients | Bacteria cultures, Enzymes, Surfactants |
| Specific Uses For Product | Routine RV Holding Tank Treatment |
| Surface Recommendation | plastic, rubber, metal, polyethylene, valve components |
| UPC | 736683009725 |
| Unit Count | 32 Fluid Ounces |
| Warranty Description | At Unique Manufacturing & Marketing, we stand behind what we make. If for any reason you are not satisfied with your purchase from Unique Manufacturing & Marketing (or one of our authorized sellers), you may request a refund or replacement with our 100% Satisfaction Guarantee (limited to original, end-user purchasers in the United States). |
X**X
Eco Friendly and Effective Septic Treatment Solution
★★★★★ 5 out of 5 stars If you're fighting flies, drain moths, or mosquitoes that seem to be coming up through your sewer lines in an RV, mobile home, fifth wheel, or portable toilet, this product is absolutely worth trying. I bought Digest-It Ultra after it was recommended by my friend Ralph, ChatGPT AI. I had reached the point where I was completely over battling the invasion of insects. I followed the directions exactly as written and even gave my sewer system a thorough flush beforehand to give the treatment the best chance of success. The live enzymes in the Ultra formula really do the heavy lifting. It helps break down waste, reduces odors, minimizes buildup in the plumbing, and most importantly, it helped eliminate the breeding ground for the insects. I noticed a significant improvement after about 3 days, and by 7 days the flies and other unwanted visitors were completely gone. After 30 days, the plumbing line from my toilet to the sewer hookup looked noticeably cleaner than it had in a long time. My advice is simple: buy the Ultra version, not the standard Digest-It. Use it exactly as directed and stick with the monthly maintenance schedule. For me, it's money well spent, and I'll definitely continue purchasing it.
C**D
The best RV black tank treatment you can buy and use
This is flat-out the best black holding tank chemical treatment available. It does exactly what it claims. It is very easy to use, as there are clear directions on the bottle. The 32-ounce bottle easily dispenses the required 1 ounce for a 40-gallon black tank. We have experienced no odors nor any clogs in our destination RV's black tanks since we started using the Unique RV Digest-It toilet treatment for two years. Also, we use it in the gray water tank, and it works there, too,
F**S
This product works better than the ones I used to use.
You got to purchase this product it did just exactly is what I heard that it would do it cleared out my drain and left my camper without odor. It was odorless the bottle did not leak. The bottle size contained the amount that I ordered. It consistently worked every time I used it. The bottle has nice durability, I keep it under the counter and I don't want it to Leach out. This bottle certainly does not.
C**T
No more odors! Won't cure tank your indicator issues...
Never used this so I thought I'd give it try. It definitely kills the odors, and based on tank draining definitely breaks down the solids and paper. It did nothing to cure the tank indicators that are always on however. This stuff does what it says!
J**D
The best black tank treatment I've found—powerful enzymes, amazing results, and worth every penny.
⭐⭐⭐⭐⭐ Living in an RV comes with its share of challenges, but in my opinion, nothing is worse than having problems with your black tank. I've tried several holding tank treatments over the years that claimed they would control odors and break down waste, but most of them never lived up to the promises on the bottle. This product was completely different. I had a clog developing in my black tank, so I added the recommended amount and hoped for the best. About six hours later, the clog was completely gone. I honestly couldn't believe how well it worked. One of the reasons I chose this product is because it uses live enzymes instead of relying on heavy perfumes or harsh chemicals. The enzymes actually break down the waste and toilet paper, which is exactly what you want in a healthy black tank. In my experience, that's the difference between products that simply mask problems and one that actually solves them. After using this, I can definitely understand why enzyme-based treatments have such a good reputation. The value is outstanding, especially considering how well it performs. I would gladly pay two or three times the price to avoid dealing with another black tank clog. This has earned a permanent place in my RV supplies, and I won't be switching to another brand. **The best black tank treatment I've found—powerful enzymes, amazing results, and worth every penny.**
S**Y
Works Great in Our RV
We’ve been using this in our RV, and it’s been working great. It helps keep the holding tank under control and does a good job with odors. Easy to use, and a little goes a long way. I’ll definitely keep buying it for our RV. Highly recommend!
R**K
Great products
I had a build up in my black tank, used a full bottle of this, sat for 2 days before dumping, and im pretty sure by the legnth of time to drain out, my tank in clean. I have since found from same manufacturer a product that is for clearing tanks, not just maintaining
E**K
It worked, but I had to use the whole bottle and it was a little pricey
I like it I would buy it again. I do say it was the best toilet treatment that I ever used for my RVs. I did have a pyramid plug, but I did have to use the whole bottle. It worked with breaking up tissue and breaking up the pyramid Plug, but I still had some lingering smells. I’m going to at least keep it in my toilet for 3+ weeks because my septic system is not full yet and I only get it dumped out about twice a year because I have a large septic system so it will have a lot of time in my system to work but at the same time it took the whole bottle to be able to get rid of the smell and actually work I know it stated that it was 32 treatments. It was a little less than $30 and it was only one treatment for me. I did use about 20 gallons of water after just to push everything through the system. I live off grid where I don’t have a lot of water to spare when flushing I do the best I can so I probably wouldn’t have this problem if I had endless water to where I can use as much as I needed it to flush and also keep some water in my toilet bowl afterwards, but it did help me with my problem, but I did have to use the whole bottle so it was worth the $30 to help me with my problem, but most definitelyexpect to use the whole bottle at least half of the bottle when purchasing
A**A
Finally found what we needed!
Being new the RV life we wanted to find a black tank product that was easy, powerful and practical. We are very happy with this product as it checks all the boxes! No more pyramids, no more toxic smells, and easy tank drainage! This will be our only black tank product going forward!
K**C
Worth it
Amazing product. A bit pricey but solved a pyramid problem.
D**E
Excellent
Excellent
D**Y
ok
looking forward to it working have something on my sensor hope it eats it off
S**G
So far it’s working
Works great drastically cut down the septic Oder. I haven’t had to dump my septic yet but if it cut the Oder I can only imagine how it’s braking down the solids
Trustpilot
4 days ago
1 month ago