Best RV Black Tank Treatment

It’s something that nobody wants to think about- the black tank on your RV. Yet, there will come a time when using the best RV black tank treatment can be the difference between a running system and a smelly disaster. While Walex TOI-91799 Deodorizer is always a popular choice, there are several other treatments that we’ll examine so that you are well-educated on the topic and ready to make a decision.

Walex TOI-91799 Deodorizer

The Walex TOI-91799 Deodorizer is often mistaken as a black tank treatment that focuses on the smell and not the causes. Do not let the name fool you- there are plenty of things that this does besides provide incredible odor prevention. One thing to love about this product is that it comes in a packet, so you just drop it into the tank and let it do its job. It will deodorize and break down waste and paper that are in the tank.

The product comes in a convenient zipper bag that you can store in the RV when you need to put in a treatment. Walex is entirely biodegradable and is also formaldehyde-free. It’s a very effective product, and it does not cost much at all.

Thetford Aqua-Kem RV Holding Tank Treatment

Next, the Thetford Aqua-Kem product is another candidate for the best RV black tank treatment. This comes in a liquid form that you simply dump into your tank via the toilet. It’s a deodorizer that is suitable for RV and boat tanks alike, it breaks down clogs, and it liquefies waste and makes paper disintegrate more completely.

It’s 100% biodegradable and it’s even able to be utilized in a regular septic tank. This is a very effective product, and perhaps the only reason some people might be put off is that it comes in a large jug and it costs more than many other treatments on this list.

Camco TST Ultra-Concentrated Drop-ins

Camco has appeared in the RV black tank treatments, too. They have developed a concentrated drop-in that features a very potent orange scent. It will eliminate the odors that are plaguing a water closet and work to break down the waste and toilet paper that is in your black tank.

Every individual drop-in can treat upwards of 40 gallons of a tank, so you get your money’s worth with this product. It’s worth noting that this does not contain bronopol, and as a result, it does not contain formaldehyde. Lastly, the entire packet breaks down, so it’s considered entirely biodegradable and nothing that the user has to worry about once they toss it into the tank via the toilet.

Walex BOI-11530 Bio-Pak 

Walex has made the list again with a good “bio-pak” that is similar to the Camco and other Walex products. These packs have an alpine fresh scent that is nice and strong enough to clean out even the worst odors. They’re easily put to use by the RV owner by simply flushing them down the toilet into the tank.

This product is especially good if you’re not using the right toilet paper that breaks down very quickly. When used, this will break down most toilet paper in less than a day. It won’t stain the tank or toilet, either. You never have to worry about using the right amount because of the simple packaging. Lastly, this is a very inexpensive product, even as a waste digester drop-in, so it’s something every RV owner could buy.

Energen Grey Water Tank Treatment

The Energen Grey Water Tank treatment is another great option that you have when it comes to keeping your tank fresh. The product is made with natural ingredients, so there is no worry that you’re putting formaldehyde in your system.

This liquid is put directly into the shower or sink drain when you’re cleaning your black tank. It will work to prevent odors for up to a week after the treatment, and it will break down grease that has built up in the system. This is a better deodorizer than waste treatment, but it will still get the job done.

Happy Campers Organic RV Holding Tank Treatment

The Happy Campers Organic RV treatment is a little different than most. Instead of coming in a pouch of a jug, this one comes in a container as a granular product. One scoop of this product will work on 40 gallons of wastewater in your tank, and the product keeps working after you have emptied the hold, so you don’t get sudden, nasty odors.

It will work on the waste and the toilet paper in the tank, breaking everything down so you don’t have to use expensive and special toilet paper in your tank. This works in all kinds of temperatures, up to 100 degrees Fahrenheit, and it is odorless for people that prefer not to smell some unusual scent. All in all, it's a powerful and effective tool, but it’s also the most expensive one that is on our list.


Your RV’s black tank is something that you have to remember to treat right, or it’s going to become a problem. Whether you need to break down waste, disintegrate toilet paper that wasn’t the right brand, or need to get the odors out of the bathroom, using these products is helpful. While they can vary in price and effectiveness, there are different tools to meet your needs. Finding one with the right scene and delivery method is simple with this list in hand.