RV Digest-It Customer Support

RV Digest-It Customer Support Page - Get The Help You Need
RV Digest-It Customer Support Page - Get The Help You Need


Our customers consistently tell us that RV Digest-It is the most effective product they've ever used to safely and effectively digest waste and eliminate odors in their holding tanks.

Though RV Digest-It is very versatile, no product is a magic bullet, and without a proper understanding of how your RV's waste water systems work you won't get the most out of RV Digest-It.

On this page you will find tips and instructions to help you get the best results with RV Digest-It.

We can assure you that you will find great results if you follow the recommendations below. However, if you do run into any problems, don't worry! We will help you make the product work exactly as you expected or give you a full refund.


RV Digest-It is designed to be used as a preventative treatment, to digest solid waste and reduce odors in your holding tanks so that your sensors continue working properly and your tank remains clog-free.

RV Digest-It isn't designed to restore malfunctioning sensors or unclog holding tanks.

+ If you need to restore your misreading holding tank sensors, try using Unique Sensor Cleaner before you replace malfunctioning sensors.

+ If you are struggling with a pyramid plug or a backed-up holding tank, use Unique Tank Cleaner to unclog your RV holding tank.


Feel free to contact customer support if you have any questions about RV Digest-It or our other products. We try to be very quick to respond, so you should hear back from us shortly!

  • The Unique Method - Avoiding Clogs and Odors In Your Black Tank

    Holding tank treatments have come a long way in the last few decades and they are more effective than ever. That said, no product is a magic bullet. If you aren’t doing the right things when dealing with your RV’s holding tanks, you are likely going to have odors, clogs, and misreading tank sensors no matter how great the treatment is you’re using. Think of it like good dental care. It doesn’t matter how good your toothpaste is if you don’t brush your teeth, floss, and visit the dentist regularly. Good treatments work best when used in conjunction with good holding tank practices.

    To help you understand how to properly treat your holding tanks, we have developed The Unique Method. Using this method will virtually eliminate all tank problems, including toilet odors, tank clogs, misreading tank sensors, and malfunctioning valves.

      • Always keep your black tank valve closed - except for when dumping your tank
      • Always treat your holding tanks with a high-quality bacteria + enzyme treatment each time you dump. We suggest Unique RV Digest-It.
      • Always fill your toilet bowl with water BEFORE you use the toilet to help the waste flow effectively down the line
      • Use ample amounts of water. Water is a HUGE component to proper tank maintenance. We recommend holding down your flush peddle for 10 full seconds each time your flush your toilet. This will hydrate the good bacteria inside the tank and allow them to adequately break down solid waste. It will also ensure that all of the solid waste inside your tank is covered by water which will help suppress odors.
      • Always keep several inches of water in your toilet bowl to prevent foul smells from seeping into your RV
      • Ideally you should dump your tanks every 3 - 5 days for optimal odor control. If you are going to extend the time between dumps, treat your tanks every 4 days with RV Digest-It to boost the microbial count inside your tank.
      • Keep your tank temperatures below 85 degrees. If you believe the tank is exceeding 85 degrees, use more water with each flush and double the treatment dose.
      • Flush your holding tank for 20-30 minutes every 3-5 dumps using a built-in rinser, external tank-flusher, or wand. This is crucial because waste (no matter how well it gets digested by your tank treatment) will collect and accumulate in the low spots of your holding tank if your RV isn’t parked 100% level. This waste cannot gravity-drain when you dump your tanks so it must be flushed out.
      • Never clean your toilets with chemicals or bleach. Use only RV toilet cleaners, like Unique RV Toilet Cleaner.
      • Perform a deep clean on your holding tank twice per year with Unique Tank Cleaner to flush the system, remove waste from the sidewalls and tank floor, remove debris that may have collected on the sensor probes, and to lubricate your valves and seals.
      • If odors become strong due to excessively hot weather (your tanks exceed 85 degrees) or because you are using less water to extend your time between dumps, add a mineral-based odor treatment like Unique Tank Odor Eliminator in addition to your normal bacterial + enzyme tank treatment to eliminate odors in these abnormal conditions.


    One thing we can't stress enough is to USE PLENTY OF WATER. We understand that many of you are dry camping and are trying to go as long as you can without dumping your tanks, and that is your choice, but you also need to understand that water is a crucial component of proper black water care and if you aren’t using enough you will have problems. It’s a trade off. Is it better to go a few days longer without have to dump your tanks, or is it better to camp in an odor-free, clog-free RV with tank sensors that always work?

    When customers call into our support line with problems they’re facing, in most cases the problems they’re experiencing are a result of using too little water. If you aren’t flushing enough water down your toilet with each flush you will eventually experience one (or all!) of the following problems at some point:

        • Malfunctioning Tank Sensors That Always Read Full
        • Strong Toilet Odors
        • Solid Waste That Doesn’t Breakdown
        • Tank Clogs
        • Valves That Stop Closing Completely

    When you are using a bacteria-based product, like the majority of Unique Camping + Marine products, water is crucial. The bacteria inside our bottles are living organisms and they need water to remain hydrated and active. Without water they will die and become ineffective.

    Water is also a great odor barrier, so by having ample amounts of water inside your holding tank to ensure all waste is under water you will be more effective at eliminating toilet odors. Imagine, if your poop and paper is above the water level, it’s going to smell very bad (think porto potty!). Also, if the water isn’t covering the waste completely, RV Digest-It can not get to it and it will remain untreated. Keeping water in your toilet bowl is essentially the same concept. By keeping a few inches of water in the bowl you inhibit the seeping of sewer gas back into your RV.

    The simple fact is this: people who use ample water will almost NEVER have odors or clogs. We recommend holding down your flush peddle for a full 10 seconds each time you flush your toilet.

    Gray Tank Valves - Keep Them Open Or Keep Them Closed?

    We suggest keeping your gray valve open because so many different types of grease (from food waste, soap, shampoo, etc.) get into your gray tank that you are potentially coating your sensors with grease by allowing your gray tanks to fill up unnecessarily. By leaving your valve open the grease and residue will run out of your tanks naturally so long as you don’t allow solids into your gray tanks.

    Important: Make sure NO solids get into your gray tank. The waste going down your drain should only be liquid waste so solid waste doesn’t accumulate in your gray tanks leading to clogs and misreading sensors. If you don’t already use one, a good sink strainer is crucial to ensuring that only liquids go down your drains.

    For more info click here.

  • Black Tank Treatment - Full Hook-Ups

    When you treat your holding tank with RV Digest-It you are getting the best of both worlds: Waste Digestion (liquefying the solid waste in your tank) and Odor Elimination. To effectively treat your black tank system, follow these steps:

    1. Dump your black tank
    2. Flush tank thoroughly to remove excess waste and remove previous treatments
    3. Close black tank valve
    4. Add 3 - 5 gallons of fresh water to black tank by depressing flush peddle for one minute
    5. Fill your toilet bowl half-full with water
    6. Shake your bottle of RV Digest-It Holding Tank Treatment
    7. Pour 2 oz. Of RV Digest-It into water (4 oz. for initial treatment)
    8. Flush toilet
    9. Add several inches of water to your toilet bowl
    10. Repeat these steps after each dump

    Note: Water has a huge impact on odor and waste reduction in your RV black tank. We strongly recommend getting into the habit of holding your flush peddle down for a full 10 seconds each time you use your toilet to make sure the waste and odors are handled properly.

    Black Tank Treatment - Dry Camping (Boondocking)

    You can certainly use Liquid RV Digest-It when dry camping, however, dry camping often involves much lower water use and therefore requires specific bacteria formulations to help control odors. We recommend using RV Digest-It Powder formula or RV Digest-It Drop-In Pods if you are dry camping.

    If you choose to use RV Digest-It liquid when dry camping, follow the steps above for 'Camping on Full Hook Ups'.

    Gray Tank Treatment

    Everyone has differing ideas on how to properly treat your gray water holding tanks. The method you ultimately choose is your decision and it should be based on how you routinely camp. Here are our recommendations when using RV Digest-It in your gray tank.

    Camping on Full Hook-Ups and Dry Camping

    Your goal is to never allow solids down your sink, showers, or dishwasher lines.

    Even if you allow only liquids into your gray tank you will still accumulate grease, soap, and residue buildup in the tank that can eventually lead to foul tank odors and cause sensors to misread, so it’s important you follow these steps to make sure your tanks remain operating properly and that you don’t get odors in your RV.

    1. Dump your gray tank
    2. Add 3 – 5 gallons of water to gray tank
    3. Pour 2 oz. RV Digest-It into your gray tank through your sink or shower
    4. Repeat each time your dump your gray tank

    Remember: If you are dry camping (boondocking) and don’t have access to full hook-ups you will likely camp with your Gray Tank valve closed.This means you will be filling your Gray Tank with water until you get to a place where you can dump the tank. The collection of soap, grease, food, and other items that will accumulate in your tank from sink and shower water will likely lead to odors and coat your tank sensors, causing them to misread. Be sure you use RV Digest-It in your Gray Tanks in this situation to reduce odors and help keep sensor functionally correctly.

  • Unique Manufacturing & Marketing

    5752 Lamar St Arvada, CO 80002

    (866) 662-4513 | support@uniquemm.com | Fax 303-996-0093

    Contact customer support