RV Digest-It Ultra takes our strongest black tank treatment and makes it even easier and more economical! With an easy-measure dispensing bottle and 32 treatments, you can enjoy all of the benefits you’re used to from RV Digest-It Plus with even less work or cost!
RV Digest-It Ultra is a professional-grade toilet treatment and it’s powered by our strongest blend of odor-eating bacteria and waste-digesting enzymes. If you want the absolute strongest tank treatment on the market, you’ve found it! RV Digest-It Ultra employs our most powerful formula of bacteria and enzymes to accomplish all of the core elements of a highly-quality holding tank treatment:
Solid waste digestion (breaks down poop and all brands of toilet paper)
Odor elimination (removes odors at their source)
Maintains working sensor probes (digests waste so it won’t stick to probes)
When used correctly, you can expect to achieve all of these benefits with RV Digest-It Ultra. Below we will address common problems RVers run into and how you can solve them with RV Digest-It Ultra.
Having problems? We can help!
Read The Guide
Toilet and Tank Odors
Foul smelling odors from your black or gray tank can quickly turn the RV trip of a lifetime into a nightmare. Solve these problems with RV Digest-It Ultra.
Many holding tank treatments fail to break down solids and paper, leaving you with clogs and residual waste. Prevent holding tank waste buildup with RV Digest-It Ultra.
It comes down to strength. RV Digest-It Ultra is significantly stronger than RV Digest-It classic and will break down waste faster, better, quicker! Sure, RV Digest-It classic is still the gold standard when it comes to holding tank treatments, but if you’re the hyper-vigilant RVer who wants to take their wastewater cleaning to the next level, RV Digest-It Ultra is the product you’re looking for!
Yes, we highly recommend using a cleaner that won’t harm RV Digest-It Ultra’s beneficial bacteria and enzymes. Caustic or antibacterial toilet bowl cleaners can kill or neutralize the bacteria that are working hard to keep your black tank free from odors and clogs. We recommend using Unique Scrub-It to clean your RV toilet bowl.
Before treating your black tank with RV Digest-It Ultra, we recommend rinsing out your black tank to prevent cross contamination of any previous chemicals used! Our preferred method of rinsing your tanks is to fill your black tank completely full with water, then dump your tank. Do this twice. This method creates a tidal wave of water that has been proven to clean the floor and walls of your tank more effectively than by using other tank rinsing methods or tools.
When you first arrive at your camping destination go into the bathroom and with the water pump turned on, step on the flush pedal for 30 seconds. This will allow 1-3 gallons of water into the holding tank.
Fill your toilet BOWL half full with water by slightly depressing the flush pedal for 15 seconds.
Shake bottle well, then add 2 ounces of Unique RV Digest-It Ultra into the water inside your toilet bowl, then flush the toilet.
Each time you use the toilet, make sure you hold the flush pedal down for a full 10 seconds to ensure enough water is delivered to the tanks.
Be sure to keep your toilet bowl half full with water anytime your RV is not moving to help prevent sewer gas from backing up into the RV.
Use toilet until your holding tank is 2/3 full, or 5 days, whichever comes first, then dump your tank and treat normally following the instructions on the label.
If you’re a new camper just getting started and have never used the black holding tank before, we recommend the following:
When you first arrive at your camping destination go into the bathroom and with the water pump turned on, step on the flush pedal for 30 seconds. This will allow 1-3 gallons of water into the holding tank.
Fill your toilet BOWL half full with water by slightly depressing the flush pedal for 15 seconds.
Shake bottle well, then add 2 ounces of Unique RV Digest-It Ultra into the water inside your toilet bowl, then flush the toilet.
Each time you use the toilet, make sure you hold the flush pedal down for a full 10 seconds to ensure enough water is delivered to the tanks.
Be sure to keep your toilet bowl half full with water anytime your RV is not moving to help prevent sewer gas from backing up into the RV.
Use toilet until your holding tank is 2/3 full, or 5 days, whichever comes first, then dump your tank and treat normally following the instructions on the label.
For your RV showers and sinks, steer away from using anything that is antibacterial or any harsh chemicals as these products will more than likely kill the helpful active bacteria in Unique products! Feel free to use any other non-antibacterial or chemical-free cleaning products for your cleaning needs.
For small cassette toilets, we generally recommend the liquid version of our RV Digest-It Ultra. With what we've seen for the liquid, we suggest starting with two capfuls in the holding tank and see how that works for you. From there, scale up or down until you land on the perfect amount.
As far as water goes, we understand you can only add so much! We recommend using as much as you can, making sure your poop and solid waste is covered with water. If, after a while, you have odors, add a bit more water as needed.
RV Digest-It Ultra is not designed to treat composting toilets. That said, bacteria and enzymes can be very beneficial in composting toilets. If you choose to add RV Digest-It Ultra to your composting toilet, follow the manufacturers instructions for introducing additives to the toilet.
We recommend treating it like a black tank and performing regular deep cleanings to reduce grease buildup!
All of our products have a shelf life of 2 years from the date of manufacturing. To find the date your product was manufactured, look at the first 6 digits of the code stamped on the bottle. This is the date it was produced (MM/DD/YY).
If your product is older than 2 years, don’t assume it’s a lost cause. We keep retains of every batch we make, going back 15+ years, and the products still work to their full capacity. It’s highly likely that yours will too - even if it is older than 2 years.
Optimal temperatures for our products are between 45-85 degrees Fahrenheit (7-30 degrees Celsius).
RV Digest-It Ultra can thrive in temperatures above 85 when enough water is used. If temperatures go above 85 degrees add more water each time you flush your toilet to keep temperatures down and odors under control. Adding more product is usually not necessary. Water is the magic - using more water will support the product and help ensure your tanks remain odor- and clog-free, even in temperatures in excess of 100 degrees.
RV Digest-It Ultra liquid can freeze. If temperatures drop below freezing, be sure you follow recommended practices to prevent your plumbing from freezing.
Yes, RV Digest-It Ultra is septic safe! Always make sure to check with your local ordinances about whether you can dump in your home septic tank!
We always recommend that RV tank dumps go through proper wastewater treatment (either an onsite system such as a septic tank, or into a city sewer access). Our products are not of concern to vegetation, but dumping of waste is generally tightly regulated, and we recommend always following local regulations.
There really aren’t any treatments that we know of that can promise two weeks of odor control without re-treatment. There are so many variables that come with this... tank size, usage frequency, water usage, etc.
The analogy we always use is dental care. Sure, you can go two weeks without brushing your teeth. Chewing gum can cover the smell of bad breath, but you’re going to end up with MUCH bigger problems than smells! You’re going to get cavities or worse. So, sure, there are some products that claim to provide extra-long odor control with very little water use, but you’re certainly going to end up with clogs, misreading sensors, and waste buildup. It’s simply not possible to go two weeks without dumping and maintain a HEALTHY tank.
Since our bacteria are hibernating in spore form they are very resilient and usually basic freezing is not going to be a problem. When freezing becomes a problem is when the bottle repeatedly freezes and thaws. Go ahead and give the product a try!
Unfortunately, even though our product ingredients are readily biodegradable, for legal and regulatory reasons we cannot claim that our products are environmentally friendly or ocean safe! We recommend that our products be used in instances where wastewater will be properly treated, and if used on boats, where the tank will be properly pumped out following all local regulations.
More often than not, lack of enough water is what causes odors – especially in hotter temperatures. When using RV Digest-It Ultra, we recommend you add between 1-3 gallons of fresh water down your toilet with the RV Digest-It Ultra.
Also, keep in mind that treating your holding tanks is definitely a 50/50 scenario: 50% the right process and 50% the right products. While you may have been using the right amount of product, your process (in terms of water usage) may need to be adjusted for the product to work at its best, especially when temperatures rise.
Keep in mind, if your human waste is exposed ABOVE water it will always stink, so at the very least, using enough water to keep all waste underwater is critical to controlling odors.
We would highly recommend increasing your water usage moving forward – for example, if you're using 1-3 gallons to prep your black tank, try increasing your water to 3-5 gallons (if you don't do that already).
It is also important when flushing the toilet to hold the foot pedal down for about 10 seconds, ensuring that plenty of water is going into the black tank!
No, other holding tank treatments will more than likely kill the active bacteria in RV Digest-It Ultra making it ineffective! When using RV Digest-It Ultra paired with The Unique Method, using other products is not necessary!
The ingredients in RV Digest-It Ultra are gentle on tanks and tank components. In most cases you can leave RV Digest-It Plus inside your tanks for extended amounts of time.
Avoid freezing as this can cause significant damage to your RV's plumbing.
We do recommend dumping your tanks every 3-5 days for optimal odor control and to prevent waste build up.
We recommend treating your tanks with RV Digest-It Ultra every time you use your RV, and after every time you dump your tanks. After you dump all wastewater and rinse the tank thoroughly, refill your tank with 1-3 gallons of water and RV Digest-It Ultra, following the instructions on the package.
We do not recommend using RV Digest-It Ultra in your freshwater tank.
The enzymes in RV Digest-It Ultra are what makes the product work so quickly. The fast-acting enzymes immediately begin breaking down toilet paper and waste into small pieces. Then the bacteria in RV Digest-It Plus feed off of these small pieces, breaking them down even more.
You can use more than the recommended amount of RV Digest-It Ultra in your tank. There aren’t any ingredients in RV Digest-It Ultra that would cause damage to your tanks, seals, or valves!
RV Digest-It Ultra is a product designed to be used regularly (after every time you dump your tank) that helps prevent odors and clogs by breaking down waste and toilet paper. Clean-It Black Tank Cleaner is designed to be a biannual deep cleaner, and Clear-It Black Tank Unclogger is formulated to clear clogged black tanks!
Absolutely! With extensive testing we have found that RV Digest-It Ultra will break down even the thickest brand of conventional toilet paper.
We do not recommend using RV Digest-It Ultra to winterize your RV.
RV Digest-It Ultra will freeze during the winter which will stop the effectiveness of the bacteria and potentially put the plumbing at risk of cracking! We recommend using a propylene glycol-based, RV-specific antifreeze for winterizing your RV.
RV Digest-It Ultra comes in several different fragrance options. Check the front of the bottle to see what the fragrance is. Fragrance-free options will say “fragrance free” on the front of the label.
RV Digest-It Ultra does not contain any biocides. Biocides are substances that kill living things (for example: pesticide, fungicide, herbicide, antimicrobial, antibacterial). Biocides would kill the bacteria and enzymes in our products that make them effective.
No, RV Digest-It Ultra will not breakdown flushable wipes. In fact, nothing will. Never flush them down your RV toilet.
What Does The Number On The Back Of The Bottle Mean?
Unique Camping + Marine holding tank treatments make it easy for you to maintain clean, clog- and odor-free holding tanks. The Unique Method is a proven holding tank treatment process that was developed through in-depth conversations with campers and virtually eliminates all problematic tank odors, prevents clogs and pyramid plugs, and ensures that tank sensors continue to read properly. Just refer to the back of the bottle for instructions.
Whether you're dealing with clogs, odors, or other wastewater issues, count on our Certified RV Techs and Wastewater Experts to stay by your side until your problem is completely resolved.
We are proud that 95% of our products are made in the USA using
American-sourced ingredients and materials.
Get support from the wastewater experts at Unique Camping + Marine,
located right here in the USA. If for some reason you don't love the
results, we'll return your money without hassle!
