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The Best RV Holding Tank Treatment

While RV camping is one of the best ways to enjoy a weekend, spend quality time with loved ones or have an outdoor adventure, it might be stressful if you don’t have the best RV holding tank treatment. You will need it if you’re looking to eliminate odor or digest waste materials in your holding tanks, grey or black wastewater.

In today’s guide, we’re featuring things to consider when shopping around for a holding tank treatment for the best results. Here, we’re also answering some of the most common questions of RV owners regarding these grey or black water holding tank treatments.

Finally, we’ve also reviewed the best grey water or black water holding tank treatments – the drop-ins and the ultra concentrated liquid forms from top brands. So if you’re ready, let’s begin.

Table of Contents

Best RV Holding Tank Treatments

1. Happy Campers Organic RV Holding Tank Treatment

  • Works best in neutralizing odor
  • Biodegradable
  • Reliable treatment option
  • Top brand
  • Friendly and safe to use on septic systems
  • A bit pricey

We love the Happy Campers organic RV holding tank treatment because it is reliable when it comes to eliminating the foul-smelling odor in our RV holding tank.

When shopping around for the tank treatment, you should be looking for dependable product that works, as it should. Happy Camper is one of the most known products in this category, which is why we appreciate that it would help us achieve our goal of having an odor-free RV tank.

The performance of the holding tank treatment is one of the best we’ve found so far. One thing we love is that it works in whatever kind of weather there is. Regardless it is hot or cold, it will deliver. One more thing is it is not harmful to the environment because it is also biodegradable. It means that it will naturally break down and not leave any harmful residue to the environment.

It is made of highly concentrated blend of monohydrate minerals along with micronutrients. This product is also cost-effective because it can treat up to 40 gallons of black water. You also only need one scoop in treating grey water tank.

This holding tank treatment is also safe to use on septic tanks. We also love that it keeps working, so you don’t have to add more of it before dumping wastewater. The Happy Campers can also liquefy household tissues and waste solids.

This product is also fragrance-free, not needing any scent to work and eliminate foul smell. It can also break down waste in a short span of time. We also found some info that the holding tank treatment can get rid of common clogs in the shower and kitchen without damaging the RV plumbing system.

On the negative side, the Happy Campers holding tank treatment is a bit pricier versus other options in the same category are.

2. Rid-X RV Toilet Treatment Liquid

  • Patented formula composed of enzymes and bacteria
  • Up to 16 treatments
  • Dissolves waste materials and RV toilet papers fast
  • Eliminates holding tank odor
  • Comes in a nice citrus smell
  • Not for use by people with allergies and respiratory disorders/diseases

When shopping around for a treatment liquid, you might want to check out the Rid-X toilet treatment liquid. It is a promising product in the category packed with features and effective ingredients in breaking down waste and the right RV toilet papers.

One 48 fl oz pack of this product is good for 16 treatments, so it is a cost-effective option for RV owners who don’t want to keep on buying their treatment liquid supply.

This treatment solution is tested and tried to break down waste solid and RV tissue papers in no time. The treatment solution is also one of the best in the category because it works effectively in delivering its purpose of treating our RV holding tanks.

The toilet treatment liquid also has a nice fragrance in Citrus scent that is something you might appreciate. It also has the power of fighting off odors that would otherwise ruin our camping.

The liquid solution is also ideal for use in marine, portable toilet and recreational vehicle.

We do believe that it is one of the best products in the category that you might want to consider if you’re looking to treat your holding tank effectively and fast. In fact, we found useful reports and reviews from customers how this holding tank treatment did well in eliminating odor and breaking down waste materials in the recreational vehicle.

The Rid-X treatment liquid is a powerful and patented enzymes and bacteria that can break down RV tissue and waste materials.

On the downside, this product should not be used by those with respiratory illnesses and allergies.

3. Walex TOI-91799 Porta-Pak Holding Tank Deodorizer

  • Drop-in convenient to use
  • Effective portion control
  • Breaks down paper and waste
  • Contains no formaldehyde
  • Cost-effective
  • Quite sensitive to the moisture in your hands

Are you looking for a drop-in variant of a holding tank odor eliminator or treatment? The Walex TOI-91799 might be the one you’re looking for and should use in your recreational vehicle holding tank.

We recommend this product because it is safe and effective to use in RV septic tanks and systems. It can treat both the black water and grey water tanks in the camper, trailer, marine or boat.

This product is known to be the leading drop-in deodorizer that breaks down waste solids and RV tissue papers within a short period of time. You also don’t have to deal with a liquid treatment. With this Walex holding tank deodorizer, you can effectively calculate the cost you would need to spend on holding tank treatments.

The Porta-Pak holding tank treatment is also used in millions of RV and commercial applications per year, making it one of the most reliable holding tank solutions on the market now.

It is also very easy to use that you only need to drop a packet of it in your holding tank, and let it work for up to 7 days. Just droop it in and let it do its work of deodorizing and eliminating waste and tissues in the RV holding tank.

Overall, this product is a decent choice if you’re looking to keep your holding tank odor-free and complete your RV sanitation system.

On the negative side, the Porta Pak is quite sensitive to the moisture in your hands. That is one thing to note when using the Walex drop-in holding tank treatment.

4. Firebelly Outfitters RV Septic Tank Treatment

  • Cost-effective and efficient, no measurement needed
  • Can be used for grey water and black water holding tanks
  • Does not harm the environment
  • Ideal for campers, trailers, recreational vehicles and mobile homes
  • Dissolves waste materials and tissue papers fast
  • Might not be suitable for hot environments

This RV Septic Tank Treatment works effectively both as a cleaner and a waste digester for marine and recreational vehicles. It can also work in portable toilets and camping grounds.

If you’re looking to fight odor effectively, you might want to consider the Firebelly Outfitters treatment solution that is one of the top-rated products on the market now because it works best in eliminating odor and breaking down waste solids in the camper, trailer, tiny home or mobile home. With it, you don’t need to buy other cleaning chemicals for your recreational vehicle.

This septic tank treatment can fight off odor effectively, but without harming the environment because it is formaldehyde-free. The best RV black tank treatment is also one of the easiest to use, so we would like to recommend them for RV owners who want to experience the convenience of using such holding tank treatment.

The holding tank treatment is also safe to use for septic parts. It is also ideal for portable toilets, camper-holding tank, boat-holding tank, marine holding tank and RV holding tank, to name some.

This product also smells good for its mulberry scent, yet it dissolves fast because it only contains the needed ingredients to dissolve waste and tissue papers in a short period of time. The septic tank treatment can also clean the holding tank walls without any hassles.

It is also very easy to use because you just have to drop in one packet of the product onto the toilet. There is no worry about spills or measuring the product yourself. That said you could be sure of a cost-effective solution in cleaning and deodorizing your holding tank.

On the downside, the product might not be suitable for use in hot environments.

5. Camco TST Ultra-Concentrated 41189 RV Toilet Treatment

  • Nice orange citrus scent
  • Marine and RV approved
  • Safe for all septic tanks
  • Contains 15 drop-ins in every bag
  • Does not contain bronopol, which releases formaldehyde
  • Might melt with moisture in your hands or environment

The Camco 41189 is an ultra-concentrated holding tank treatment, which is cost-effective and efficient. With it, you don’t have to do the measurement yourself because it is in the drop-in variant. Using it, you just have to toss it and then flush. It will do its job without you having to take the measurements for yourself for a liquid or powder treatment chemical for the recreational vehicle.

The Camco TST Ultra-Concentrated 41189 is also formaldehyde-free, making it safe not only for your septic tank but also for nature. The Camco TST Ultra-Concentrated 41189 also does not contain the formaldehyde-releasing broponol.

This product can help eliminate the odor in your holding tank and break down waste. It is also cost-effective because you only one drop-in to treat a tank with up to 40 gallons in capacity. We also recommend it because each pack already contains 15 drop-ins, so you won’t run out of it quickly.

It also contains special chemicals that work well in breaking down waste materials and RV tissue papers. You will also love the citrus scent of the surfactant oils to work in trapping unwanted odors in the holding tank. With this holding tank treatment, you can worry less about deodorizing your tank and enjoy your camping experience more.

The product is also approved by the RV and marine industry, making it the ideal choice for those looking for a reliable product for their RV septic tanks. You can also use it for camping portable toilets and other applications for its patented formulation that works effectively in breaking down waste solid and tissue papers.

On the negative side, this product might melt in the moisture from your hands and the surroundings.

6. Caravan Overnight Sensor Tank Cleaner

  • Eco-friendly probiotic bacteria and enzyme formula
  • Effective microbial based septic tank solution
  • Ideal for marine and RV uses
  • Approved by the RV and marine industry
  • Clears clogs on toilets and tanks
  • A bit pricey

This RV tank cleaner is one of the best RV toilet chemicals for breaking down waste because it is eco-friendly and reliable. We appreciate that it is environment-friendly while also being effective in delivering its promises of eliminating odors in our holding tanks.

This tank treatment is a powerful formula that’s guaranteed to clear clogs and tank gauges fast and easily for up to 98%. The maker has also backed it up with their no hassle money back guarantee. So if you’re not satisfied with it, you can have peace of mind that you won’t waste a single cent.

We recommend this product because it is convenient to use. All you have to do is to shake and pour it into the toilet before flushing. Let it soak and go! It is also safe for use while traveling or using the toilet while the product is soaking in the septic system.

For the best results, you might want to soak it for a longer period of time to increase the cleaning results.

We also want to highlight that the product has fast-acting microorganisms, which can start multiplying to begin creating more enzymes that will be the ones to break down the waste and eliminate sewer odor. With the fast action, you can have peace of mind that the human waste, sludge, blockages and toilet papers will be eliminated in a short period of time.

Another best about this product is that it’s safe for the septic tank, waterways, pets, people and the environment.

On the downside, this product is a bit costly, though.

7. Walex BOI-11530 Bio-Pak Natural Holding Tank Deodorizer

  • Special formulation breaks down waste and tissue papers fast
  • Eliminates the need for special tissue papers
  • Effective waste digester
  • Portion control, no spills
  • Safe for septic tanks
  • Might not be ideal for hot environments

This waste digester and enzyme deodorizer is one of the best natural septic tank cleaners on the market we found on the market. We believe that it is one of the most effective cleaners and deodorizers in the category.

The Bio Pak holding tank cleaner is a unique formulation that can eliminate the odor in the RV septic system while also being effective in breaking down waste materials, blockages, and sludge and RV toilet papers fast!

Without any hassles, this product will work effectively in breaking down waste materials in your toilet and septic system. That said you could have more enjoyable camping trips and time.

The product is also safe and tested for camper holding tank, trailer holding tank, marine holding and recreational vehicle holding tank.

The Walex BOI-11530 is an advanced formulation of enzymes proven to break down waste while also getting rid of nasty odor. Using it, you don’t have to use RV grade toilet paper for your recreational vehicle because it can break down even ordinary tissues used at home as well as the toughest tissue products on the market.

The deodorizer also has a nice Alpine Fresh Scent that you might love. As it is also in drop-in form, it does not require measuring. You can simply drop one of it in the toilet and then flush. It will soak in the septic tank and work to break down the waste materials while also eliminating any clogs and breaking down sludge materials.

On the downside, this product might not be suitable for hot environments.

8. Camco 41197 TST Ultra-Concentrate RV Toilet Treatment

  • Effective and safe for RV septic tanks
  • Does not stain toilets
  • Fresh citrus fragrance
  • No formaldehyde
  • Controls odor effectively
  • A bit pricey

The Camco 41197 is one of the highly recommended holding tank treatments of our team. For one, we’ve been using Camco RV products in our recreational vehicle. We have proven how reliable this brand is when it comes to its excellence and commitment to quality. But that’s not all, as this product has made a name by itself. It is ultra concentrated and very effective in getting rid of odor and breaking down waste.

It is also tested and tried by the RV and marine world as a safe cleaner and treatment solution to RV septic systems. One of the things we love about it is that it can also eliminate clogs, sludge, solid waste and tissue papers, even the toughest of their kinds on the market.

The Camco TST treatment solution also comes with a citrus scent that you might love. Plus, we recommend this product because it contains no formaldehyde that can harm your health and the environment.

We also find that this is a non-staining formula, so we don’t have to worry about high quality RV toilets being stained. So aside from its efficiency, this product is also safe to use in our toilets and septic systems.

This solution does not require preparation or mixing. It is a one-stop solution for RV owners who don’t want a long process in cleaning and deodorizing their holding tanks. This product is also cost-effective because it is ultra-concentrated. You will only need two ounces to clean and treat up to 40 gallons of wastewater.

On the downside, this product is a bit pricey.

9. Valterra V23128 Pure Power Blue Waste Digester

  • Efficient and effective
  • Cost-effective requiring only two ounces per treatment
  • CA compliant solution
  • Clean and fresh scent
  • Safe for RV septic systems
  • Might not work when used in extremely hot environments

The Valterra V23128 is one of the best odor eliminator and waste digesters for our recreational vehicles because it works effectively in breaking down blockages, sludge, tissue papers and waste solids. We find it unique and effective for its biological formula that has the odor control technology called the BioBlastPlus.

Unlike other deodorizers, this formula can work well in all temperature conditions. It can keep up with high or low temperatures. The product is also cost-effective because it only requires two ounces per treatment in the grey and black holding tanks.

It has the revolutionary formula of enzymes and bacteria that work fast in deodorizing your holding tanks. With it, you can be sure that you can keep your tanks odor-free and clean. It does make the big difference for its powerful cleaning and deodorizing power. By using it, you can b sure of an odorless tank in your RV.

This product is chemical-free, so it is also environment-friendly. You can rely on it not only for its rinsing and cleaning power but also for its eco-friendliness.

The Valterra V23128 is also approved by the marine and RV industry. When shopping around for a waste digester, you should be looking for a product that is approved by camping grounds. The Valterra product is approved in recreational vehicle parks as well as in marine and RV dump stations.

You will also appreciate the clean and fresh scent of this product. It will not also harm pets and children.

On the downside, it might not work in extremely hot environments.

10. Unique RV Digest-It Holding Tank Treatment

  • No special tissue paper required
  • Digests waste solid and tissue papers
  • Eliminates odor fast, does not mask smell
  • Cost-effective
  • Ideal for marine and RV
  • Can melt with moisture

We also love the Unique holding tank treatment that works well and that is safe for all RV septic systems. It is tried and tested to digest waste, sludge, tough tissue papers, sludge and clogs in the septic system of your recreational vehicle.

Using it, you don’t also have to buy special tissue paper for your camper, trailer, recreational vehicle, tiny home and mobile home. This product already has 20 packs, so you can rely that it can last long.

It is a septic-safe formula that ensures you can empty and clean your tanks easily without any backup. The Unique holding tank treatment can also eliminate odors quickly. That’s not all though, as it is also convenient to use. All you need is to dissolve the pod in the toilet and then flush it.

In addition, we find it valuable in maintaining sensors, digesting solid waste and eliminating odors in low-water use application, such as dry camping. It is also safe to use, eliminating the need for using overpowering fragrances and dangerous chemicals in your recreational vehicle.

With it, you don’t have to use strong fragrances just to mask the odor. This product can get rid of odor with the strongest and advanced formulation. It won’t mask odors unlike other products that claim removing odors, but they do not.

This product is a complete and powerful blend with its bacteria and enzyme combination. It works fast and effectively in digesting waste in your septic system.

We highly recommend this product for its efficiency and effectiveness in getting rid of odors and digesting waste in your RV’s septic system. Using it, you do not need to buy special RV toilet papers because it can dissolve even the toughest of them all.

On the negative side, it can melt with moisture.

Why You Should Trust Us

Choosing the right holding tank treatment matters because it can offer us the benefits we’ve listed later in this guide. You should also trust us because we’re consumers ourselves and want only the best products for our recreational vehicle.

That is why we have carefully picked the best in the category. We have also compared their features, including convenience of use, cost-effectiveness, ingredients, what they digest, odor-eliminating power, compatibility for RV septic systems and other things we believe important when shopping around for these products.

We’ve also real RVers that have one mission – to help and guide fellow RVers when picking the best holding tank treatments for our recreational vehicles, campers, motorhomes and trailers. So if you’re looking for a guide on how to pick the right holding tank treatment, we would like to encourage you to begin comparing the products we’ve listed here.

What Is An RV Holding Tank Treatment

best rv black tank treatment

The recreational vehicle holding tank treatment is a special waste digester and deodorizer for marine, campers, tiny homes, motorhomes and other applications. Many good brands are eco-friendly and safe to use in RV septic systems. They are approved by the marine and recreational vehicle industry.

Using a holding tank treatment, you don’t have to use special tissue papers for your RV. A holding tank treatment is usually made of bacteria and enzyme formulation that is able to digest solid waste materials and even tough tissue papers.

The holding tank treatment can also get rid of clogs or blockages in showers and toilets. They can also digest sludge and other waste materials. Some of them are fragrance-free; some have citrus and fresh scent. Using the best of them, you can also be sure of eliminating odors that are building up in your tank.

Types Of RV Holding Tank Treatments

best rv toilet treatment

There are two types of recreational vehicle holding tank treatments – the drop-ins and the concentrated liquids. One of their main differences is their form. Some people consider the drop in variants because they are convenient to use and do not require measuring before using. Portion control is what many love about this kind of holding tank treatment. These tablets are easier to use than the ultra-concentrated ones because they don’t cause spills.

There is also the liquid type of tank treatment, and some people prefer it than the drop in variants because they are ready to be flushed. It is convenient to use, but you have to do the measurement yourself. You should also be careful using it because of spill danger. But then, they are as good to use as the tablets because they’re also made of high quality and effective waste digesters, usually bacteria-enzyme formulations.

The good drop-ins and liquid types are free from formaldehyde and harmful ingredients. They’re also biodegradable, not harming the environment.

By using a holding tank treatment, you also don’t need to buy special RV toilet paper because the best ones can digest even the toughest ones. You can also be sure that these products can digest even sludge and waste solids. Plus, many good ones can eliminate odor and unclog blockages.

Why Do You Need An RV Holding Tank Treatment

There are many benefits to using a recreational vehicle holding tank treatment. If you want to keep your RV septic and sewer system functional, clog-free and odor-free, you should use the septic cleaner that can break down solid waste and unclog any blockages. For further explanation, check out the following for the benefits of using a holding tank treatment.

Eliminates odor

The waste digester and odor eliminator is effective in getting rid of holding tank odor. It is tested and approved by the marine and RV world to deodorize holding tanks.

Sanitizes the holding tank

The bacteria and enzyme in the best RV holding tank chemicals can sanitize the holding tanks effectively. With it, you don’t need to buy other cleaning and deodorizing the RV tank. Choose the right one with the capacity of sanitizing the holding tank effectively. You can begin with the comparison and research process using our list above.

Can be used for grey and black water tanks

The product is versatile that it can be used in both the grey and black water tanks. It is one of the main advantages of using this product that does not only get rid of odor and digest waste but can also be used in the black water and grey water holding tanks.

Digests even the toughest tissue brands

Using it, you can choose to or not to use a special RV toilet paper. The best of these waste digesters can digest and dissolve even the toughest tissue brands. However, we still recommend using goood RV toilet papers, which can help in preventing clogs in your sewer and septic systems. In the end, it can still be cost-effective to use the recreational vehicle or camper tissue papers.

Digests waste solids

This product is effective in digesting solid waste and sludge in the septic system – thanks to its bacteria and enzyme combination. They can break down solid waste materials, which would otherwise clog the lines and septic system.

Unclogs blockages

These holding tank waste digesters can also unclog any blockages or clogs in the septic. In fact, some RV owners also use them in unclogging showers and toilets back home. Nevertheless, this versatile waste digester can be used in plenty of applications.

Keeps the septic system functional

With the holding tank treatment, you can keep your septic and sewer functional and without clogs. You must use this cleaning product if you don’t have to deal with such blockages from time to time.

How We Picked

We have several options regarding holding tank treatments, so we should carefully pick one that will meet our needs. In this review, we’ve researched for and compared different holding tank treatment products, including tablets and ultra concentrated liquids.

To help you further in the comparison process, we have listed below some of the things we have considered in reviewing the top picks we’ve highlighted today.


Holding tank treatments come in two types – the tablet form and the liquid form. In this review, we’ve picked products belonging to these two types. Although they have the same function, they just vary when it comes to convenience of use.

Some RV owners prefer the tablet form because they don’t have to do the measurement when deodorizing the toilet and septic. They just have to toss it in the toilet, wait for it to dissolve and then flush the bowl. The treatment will then soak into septic and start working. The enzymes are going to break down the waste materials and sludge, keeping your septic system functional and free from clogs.

The same things are what ultra-concentrated types do. They also dissolve waste solids and eliminate odor in the holding tank. Some RV owners prefer this form because they don’t need to wait for it to dissolve. They can readily flush it into the toilet bowl and then it starts working.

Biodegradability and eco-friendliness

When picking a holding tank treatment, you should look for one that does not harm the environment. Choose one that contains no formaldehyde releasing ingredients. Also, check that the product is biodegradable – that means it will naturally disintegrate or break down without chemical aids.

Effectiveness and efficiency

We reviewed the products also based on their efficiency and effectiveness. Those we have featured above are approved by the marine and RV world and the RV camping community. They can dissolve waste solids and materials in the sewer and septic as well as completely eliminate odors.

Some of these products can be used in treating up to 40 gallons of wastewater. Each drop-in or an ounce of a liquid holding tank treatment can also treat both grey and black RV water.


The price is another thing we considered in choosing the best RV toilet treatment, but we also checked on quality because we believe the price alone should not be the basis to pick this kind of product. What comes in here is how many times you could use the product per purchase. How many tablets or packets are in one pack? How many times could you use liquid form per bottle? So the bottom-line here how cost-effective the holding tank treatment is?

Deodorizing power

We also picked based on the deodorizing ability of the holding tank treatment. In most cases, it should not only mask the bad smell with a fragrance. That said you should not base the selection only according to the scent variant of the holding tank treatment. In fact, there are holding tank treatments that are fragrance-free, while some come with a fresh and clean scent.

What they digest

Another thing we considered is its digesting ability. What kind of wastewater materials can it digest? The best of them can digest waste solids and even the toughest tissues around.

There you have some things we have considered in the review of the products we have featured above. We’re hoping you picked up valuable information when trying to compare different holding tank treatments yourself. If you would like to start with the selection process, you might also want to refer to the top picks list we have here.

Frequently Asked Questions

Q: How does it work?

A: It’s simple. Just drop it in for the tablet form or pour it onto the toilet bowl. Flush it and then let it soak. The treatment will start working and treating up to 40 gallons of wastewater, depending on the brand. This product is so effective that it can keep deodorizing and treating the toilet and septic system.

Q: How to use it?

A: Just drop it into the toilet and let it dissolve for the tablet variant. It will soak in the septic and treat the wastewater. On the other hand, you should first measure the recommended amount for the liquid form and then pour it into the toilet so that it can start working.

Q: How to clean RV holding tanks?

A: Use the holding tank treatment to clean the RV holding tank if you don’t have the time to empty it especially in long camping trips. But when they’re full, they can easily be emptied in a nearby dumpsite. If you’re RV is parked far away from it, you can use the right portable RV holding tank that usually has transport wheels for convenience. It also has low drain holes for complete emptying of the holding tanks


The best RV holding tank treatment is an essential product for your RV sanitation and septic system. It can digest waste solids and unclog blockages as well as eliminate odors.

If you’re looking to find the best one, consider comparing the top picks we’ve featured by looking into some factors we’ve shared on how we picked. A few of these things to look for include effectiveness, affordability, wastes they digest and eco-friendliness, to name some.

Hope you find valuable information from this guide and later be able to decide which holding tank treatment is for you. Happy shopping! If you are looking for other RV waste water and sanitation products, you should read these articles: best RV toilets, best RV toilet papersbest RV portable waste tanks and best RV sewer hoses. We hope you find them useful!

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