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List unavailable.Unique RV Digest-It Ultra RV Toilet Treatment, 32 Uses, Super Concentrated - Eliminates Odor and Liquifies Waste, Easy-Measure Extra-Strength Preventive Bio-Enzymatic Holding Tank Treatment (32 oz)
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Purchase options and add-ons
| Brand | Unique |
| Item Form | Liquid |
| Scent | Ultra |
| Specific Uses For Product | Routine RV Holding Tank Treatment |
| Material Feature | Scented |
About this item
- Prevents tank problems before they start; this RV black tank treatment breaks down waste and eliminates odors so buildup, clogs, and sensor issues don’t develop in your RV toilet or holding tank
- Powerful bio-enzymatic RV tank treatment; liquifies waste fast and works as a toilet deodorizer to help control odors, reduce sludge, and improve overall RV septic tank treatment performance
- Super concentrated RV toilet treatment; one bottle delivers 32 treatments, making it a reliable choice for RV essentials and camper essentials without constant repurchasing
- Easy-to-measure liquid RV toilet treatment; simple dosing makes it easier to maintain your RV toilet compared to toilet drop ins, helping keep tanks clean, trip after trip
- Unique Cares program included with every purchase; helping you experience worry-free RVing with access to our Colorado-based Certified RV Tech Team for expert assistance with wastewater issues
Additional Details
Consider a similar item
| Item Form | Liquid |
|---|---|
| Scent | Ultra |
| Specific Uses For Product | Routine RV Holding Tank Treatment |
| Surface Recommendation | plastic, rubber, metal, polyethylene, valve components |
| 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 |
| Contains Liquid Contents? | Yes |
| Cleaning Agent Formulation | Detergent |
| Container Type | Bottle |
| Recommended Uses For Product | Use regularly in RV black and gray holding tanks to support waste digestion, odor control, and ongoing tank maintenance |
| Product Benefits | Compatible with black and gray tank systems, 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 |
| Item Volume | 32 Fluid Ounces |
|---|---|
| Unit Count | 32.0 Fluid Ounces |
| Number of Items | 1 |
| Item Weight | 2.4 Pounds |
| Size | 32 Fl Oz (Pack of 1) |
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Product specifications
Features & Specs
| Item Form | Liquid |
|---|---|
| Scent | Ultra |
| Specific Uses For Product | Routine RV Holding Tank Treatment |
| Surface Recommendation | plastic, rubber, metal, polyethylene, valve components |
| 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 |
| Contains Liquid Contents? | Yes |
| Cleaning Agent Formulation | Detergent |
| Container Type | Bottle |
| Recommended Uses For Product | Use regularly in RV black and gray holding tanks to support waste digestion, odor control, and ongoing tank maintenance |
| Product Benefits | Compatible with black and gray tank systems, 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 |
Measurements
| Item Volume | 32 Fluid Ounces |
|---|---|
| Unit Count | 32.0 Fluid Ounces |
| Number of Items | 1 |
| Item Weight | 2.4 Pounds |
| Size | 32 Fl Oz (Pack of 1) |
Item details
| Brand Name | Unique |
|---|---|
| Global Trade Identification Number | 00736683009725 |
| Manufacturer | Unique Manufacturing & Marketing |
| UPC | 736683009725 |
| Model Number | 417-AZ |
| Part Number | 417-AZ |
| 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). |
| Best Sellers Rank |
|
| ASIN | B0D5DPT2BB |
| Customer Reviews |
4.6 out of 5 stars |
Materials & Care
| Material Features | Scented |
|---|---|
| Material Type Free | Bio-enzymatic liquid formulation |
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Important information
Ingredients
Proprietary Bio-Enzymatic Blend (Bacteria Cultures, Enzymes, Surfactants)
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.
Product description
Which Product is Right for Me?
Unique RV Digest-It Ultra
Add to Cart
| Unique Clean-It
Add to Cart
| Unique Clear-It
Add to Cart
| Unique Restore-It
Add to Cart
| Unique Scrub-It
Add to Cart
| Unique Store-It
Add to Cart
| |
|---|---|---|---|---|---|---|
|
Customer Reviews
|
4.6 out of 5 stars 12,475
|
4.6 out of 5 stars 1,337
|
4.4 out of 5 stars 1,243
|
4.2 out of 5 stars 1,006
|
4.7 out of 5 stars 1,689
|
4.5 out of 5 stars 198
|
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Price
| $21.99$21.99 | $20.99$20.99 | $22.47$22.47 | $23.99$23.99 | $12.57$12.57 | $19.99$19.99 |
|
Product Type:
| Holding Tank Toilet Treatment | Black Tank Deep Cleaner | Black Tank Unclogger | Black Tank Sensor Cleaner | RV Toilet Bowl Cleaner | Black Tank Storage Treatment |
|
Product Use:
| Regular black tank maintenance | Deep cleans black tanks | Clears clogs & backups fast | Restores misreading sensors | Removes toilet stains + odors | Cleans tank during storage |
|
Additional Features:
| Our strongest, fastest formula | Like power washing your tank | Clears most clogs in 72 hours | Trust your sensors again | Also enhances black tank | Safe for long-term storage |
|
Frequency of Use:
| Use every time you dump | Use every 4-6 months | Use as needed | Use as needed | Use often | Use as needed |
|
Powerful probiotics + enzymes
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Backed by Unique Cares Promise
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
|
Made in the USA
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
From the brand
-
-
Best RV Toilet Treatments
-
-
Best RV Toilet Bowl Cleaners
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Best RV Black Tank Essentials
Product details
- Product Dimensions : 5.3 x 2.5 x 9.2 inches; 2.4 Pounds
- Item model number : 417-AZ
- Date First Available : May 28, 2024
- Manufacturer : Unique Manufacturing & Marketing
- ASIN : B0D5DPT2BB
- Best Sellers Rank: #102 in Automotive (See Top 100 in Automotive)
- Customer Reviews:
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Generated from the text of customer reviewsSelect to learn more
Reviews with images
PROOF IS IN THE PUDDING-LIKE DIGESTED DOG KIBBLE
Top reviews from the United States
- 5 out of 5 stars
Did My Research After Trying Many Others – This Is the One!
Reviewed in the United States on April 12, 2026Did My Research After Trying Many Others – This Is the One!
After trying several RV toilet treatments over the years with mixed results, I finally did some serious research before my next purchase—and Unique RV Digest-It+ is the one I landed on, and so far I'm convinced it's the best I've used.
The extra-strength formula does an impressive job of liquifying waste and breaking down all brands of toilet paper without leaving anything behind in the tank, which is exactly what you need for a clean, problem-free black tank. The odor elimination is noticeably effective—no chemical smell, no unpleasant odors coming back up through the toilet, just genuinely fresh results. For RV use where black tank maintenance is a critical part of every trip, having a treatment you can actually trust makes a real difference in the overall experience.
It's also reassuring that it's safe for all RV and marine holding tanks and septic systems, so there's no concern about damaging seals or sensors. After testing many products, this one stands out for its effectiveness, reliability, and clean results. If you've been bouncing between RV toilet treatments looking for the right one, do yourself a favor and make this your last stop.
11 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Great product
Reviewed in the United States on May 28, 2026This works very well and we have not had any odors
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Illuminated the odor
Reviewed in the United States on April 21, 2026This product worked very well using the instructed amount. It appeared to break down the waste well and eliminated the toilet odor
2 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 4 out of 5 stars
Great Black Tank Cleaner…
Reviewed in the United States on April 16, 2026If you’re looking for a chemical that does a really good job then look no further than. I noticed since I started using this companies chemical my black tank No Longer smells! It really does a good job on getting my Black tank cleaner. Instead of cleaning my black tank 3 to 4 times…. I’m now doing it just Twice. Thumbs up for this product!
One person found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Amazing Tank Treatment — Works Exactly as Promised
Reviewed in the United States on April 18, 2026This stuff is amazing. I’ve been using it for about a year now, and it truly breaks down all the solids in the holding tank into a liquid or sludge, which makes dumping so much easier. It does exactly what you want a tank treatment to do — everything dissolves properly, and there’s no buildup left behind.
One of the biggest benefits I’ve noticed is that my tank sensors have become much more accurate since using it. Anyone who owns an RV knows how frustrating those sensors can be, so that improvement alone makes this product worth it.
Overall, it’s effective, reliable, and makes tank maintenance far less of a headache. Highly recommended for any RV owner.
6 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Best product
Reviewed in the United States on May 24, 2026Made in the U.S.A, that alone sold me. The other it works great. Dose it smell pretty absolutely not. But I just need it to work and it dose. Great product.
One person found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 5 out of 5 stars
Works Well
Reviewed in the United States on May 29, 2026Liquifies human waste & paper
Sending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again - 3 out of 5 stars
It worked, but I had to use the whole bottle and it was a little pricey
Reviewed in the United States on March 29, 2026I 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
4 people found this helpfulSending feedback...Sending feedback...HelpfulThank you for your feedback.Sorry, we failed to record your vote. Please try againThanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Top reviews from other countries
Al Wyllie5 out of 5 starsGreat product
Reviewed in Canada on May 28, 2026Best RV toilet chemical I have used.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Andrea5 out of 5 starsFinally found what we needed!
Reviewed in Canada on June 12, 2025Being 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!
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Lorna5 out of 5 starsDoes the trick and has lasted the full camping season.
Reviewed in Canada on November 2, 2025When the black tank is drained, waste flows easily because it is broken down ... no more clogs and no more stinkies.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Ally N.4 out of 5 starsWorks great
Reviewed in Canada on August 11, 2025Works 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
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Guy L.5 out of 5 starsRV digest-it black tank treatment
Reviewed in Canada on November 23, 2025Rv black tank treatment works great and smells amazing.
Sending feedback...Thanks, we'll investigate in the next few days.Sorry, We failed to report this review. Please try again
Product summary presents key product information
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Product Summary: Unique RV Digest-It Ultra RV Toilet Treatment, 32 Uses, Super Concentrated - Eliminates Odor and Liquifies Waste, Easy-Measure Extra-Strength Preventive Bio-Enzymatic Holding Tank Treatment (32 oz)
From Unique
Price
One-time purchase: $21.99 ( $0.69 / fluid ounce) 8% Savings
List Price: $23.99
Subscribe & Save price (No fees, Cancel anytime): $20.89 ( $0.65 / fluid ounce) 13% Savings
List Price: $23.99
Additional savings available through Subscribe & Save (No fees, Cancel anytime)
About this Item
- Prevents tank problems before they start; this RV black tank treatment breaks down waste and eliminates odors so buildup, clogs, and sensor issues don’t develop in your RV toilet or holding tank
- Powerful bio-enzymatic RV tank treatment; liquifies waste fast and works as a toilet deodorizer to help control odors, reduce sludge, and improve overall RV septic tank treatment performance
- Super concentrated RV toilet treatment; one bottle delivers 32 treatments, making it a reliable choice for RV essentials and camper essentials without constant repurchasing
- Easy-to-measure liquid RV toilet treatment; simple dosing makes it easier to maintain your RV toilet compared to toilet drop ins, helping keep tanks clean, trip after trip
- Unique Cares program included with every purchase; helping you experience worry-free RVing with access to our Colorado-based Certified RV Tech Team for expert assistance with wastewater issues
Product Description
Options Available
Scent
- Classic
- Plus
- Ultra
Size
- 32 Fl Oz (Pack of 1)
- 32 Fl Oz (Pack of 2)
- 32 Fl Oz (Pack of 3)
- 128 Fl Oz (Pack of 1)
- 128 Fl Oz (Pack of 2)
Important Information
Ingredients
Proprietary Bio-Enzymatic Blend (Bacteria Cultures, Enzymes, Surfactants)
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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