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🚐 Keep your RV fresh and clog-free, trip after trip!
Unique RV Digest-It Ultra is a powerful, enzyme-based liquid treatment designed to control odors and break down waste in RV black tanks. Each 32 oz bottle provides 16 treatments, helping prevent clogs and sensor issues while supporting routine tank maintenance. Its non-caustic, sensor-safe formula ensures smooth tank dumping and odor control, backed by expert technical support for a worry-free RV experience.

















| ASIN | B0BPJJ289Q |
| Best Sellers Rank | #111 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 12,992 Reviews |
| Global Trade Identification Number | 00736683009473 |
| Included Components | 32 oz. Extra-Strength RV Black Tank Treatment |
| Item Form | Liquid |
| Item Highlight | Controls odors without masking & digests waste/toilet paper fast; 16 RV toilet treatments for routine holding tank care |
| Item Type Name | Extra-Strength RV Black Tank Treatment |
| Item Volume | 32 fluid ounces |
| Item Weight | 2.3 pounds |
| Manufacturer | Unique Manufacturing & Marketing |
| Material Feature | Non-caustic formula |
| Material Features | Non-caustic formula |
| Material Type Free | Bronopol Free, Formaldehyde Free |
| Model Number | 415-AZ |
| Number of Items | 1 |
| Part Number | 415-AZ |
| Product Benefits | Aids smoother tank dumping, Helps break down organic waste and toilet paper, Reduces buildup that can affect sensors, Supports odor control in holding tanks, Works best in black water systems |
| Recommended Uses For Product | Use regularly in RV black holding tanks to support waste breakdown, odor control, and sensor function during routine tank maintenance |
| Scent | Ultra |
| Size | 32 Fl Oz (Pack of 1) |
| Special Features | Compatible with septic systems, Designed for black tanks, Enzyme-based waste and toilet paper digestion, Sensor-safe buildup reduction, Supports routine tank maintenance |
| Special Ingredients | Bacteria cultures, Enzyme blend, Surfactants |
| Specific Uses For Product | Routine RV Holding Tank Treatment |
| Surface Recommendation | Plastic holding tanks; rubber seals; valves; tank sensors; PVC plumbing lines |
| UPC | 736683009473 |
| Unit Count | 32 Fluid Ounces |
| Warranty Description | Satisfaction Guaranteed |
M**E
This stuff works!
The stuff works great for a treatment for my black tank! I’ve never had any problems with buildup in it and it does remove the smell within an hour or two I would say. Some people say it has a very chemically smell and I don’t necessarily disagree with that, but you’ll only smell it within an hour after using it. This kind of makes your waist smell more like rotten pea soup than actual crap I would say when you’re draining the black tank but other than that, you wouldn’t smell it throughout the week or two.
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.
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.**
Q**E
Great for regular black tank maintenance!
This stuff works to maintain black tanks between flushes. Keeps tanks odor free and does a great job liquifying solids. Easy to use, ready to go out of the bottle!
B**I
Great product
This is a very good product it works as described. I have been using it in my motorhome for 4 months and it works no smell and no clogs.
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!
P**O
Don’t put a price on no odour, worth the purchase.
Pricier side but works well for longer holding durations.
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
A**.
Works great
Works great and was the best from the research I did, but ended up finding something different that worked better. But this is still a great product I recommend it
J**E
Amazing Stuff
This is amazing stuff. As a RV owner we were looking for something to work efficiently and keep order to a minimum. I couldn’t be happier. I’m so glad we purchased it. I highly recommend.
Trustpilot
3 days ago
3 weeks ago