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Your cart is empty. Bid farewell to the frustration of inaccurate sensor readings. Our RV holding tank cleaner swiftly restores sensor function, ensuring you always have an accurate view of your tank's status. The RV black water tank cleaner lubricates valves and seals, providing a layer of protection that ensures your RV's black tank functions seamlessly. No more worries about leaks or malfunctioning components.
This powerful camper tank cleaner eliminates waste and paper buildup from your tank's walls, leaving them sparkling clean and removing odors in as little as 12 to 24 hours.
Our super-concentrated enzyme trailer septic tank cleaner is scientifically developed to tackle the toughest waste and paper buildup. These natural enzymes penetrate waste caked to the tank walls and sensors, breaking down buildup and ensuring a thorough clean.
Using Commando is a breeze, thanks to the easy-to-use dissolvable packets. No mess, no fuss—just drop it in and let the enzymes work their magic. Plus, it's septic system safe.
Gene
Reviewed in the United States on February 24, 2025
this product has kept my RV holding tank clean during an 8,000 mile trip over 2 months.
Mark Peden
Reviewed in the United States on September 30, 2024
This stuff straight up works! I filled my black tank with water a few weeks back, dropped one of these in, took it to storage about 2 miles from home. Today I picked the RV up and brought it home and dumped the black tank. Voila it reads empty. Wow, this is the first time in the 4 years that I’ve owned it the black tank monitor is reading empty.
Jane
Reviewed in the United States on September 19, 2024
We have a 2022 Sunseeker motorhome and the black tank sensor always showed at 3/4 full even after dumping. I put the tablet in the tank and completely filled the tank with water. Left it in for a week and then drove 120 miles before dumping. Sensor shows correctly now. Would definitely recommend!
Lindy
Reviewed in Canada on August 15, 2024
Works well
ABsamp
Reviewed in Canada on July 25, 2024
Smell good but after following all the instructions there was no change in my bad sensor reading so did not serve that purpose.
Robert
Reviewed in the United States on July 15, 2024
Liked the ease of using,put in tank a couple of days prior to leaving,the rocking of the trailer cleans any residue in tank ,no problem with sensors,my new go to
Good
Reviewed in Saudi Arabia on June 11, 2024
is what it means
Ewriter
Reviewed in the United States on May 16, 2024
I used these for 6 months while living full-time in my RV. I recently noticed a slight odor when flushing. I flushed the tank and doubled the recommended quantity, without relief. In a small space, odors can be a huge problem. I switched to another brand and the odor is gone.
Brent Kitson
Reviewed in Canada on November 9, 2024
Performed exactly as advertised and did the trick. Highly recommend.
Customer
Reviewed in the United States on October 28, 2024
I dropped these in my filled black tank because my sensors were not working . I waited 2 days emptied the tank checked the sensor readout and yes the sensors were working again.
MISSCDN
Reviewed in Canada on August 29, 2023
Despite using tank cleaning drop-ins regularly and using the tank flush, we would consistently a 1/3 full reading immediately after emptying. We dropped one of these into the tank, filled per instructions and let the solution sit for approximately 12 hours. Emptied and tank flushed again and after a moment or two, the tank indicated as empty so it worked perfectly! The only think I wish is that these RV necessities would be less costly - on a cost per use basis, we are paying just over $4 per drop-in (after tax). True, you shouldn't need to use them very often but that's still a lot. They do work though, so I guess my mindset should be that you get what you pay for.
Suzanne
Reviewed in the United States on June 26, 2023
This product doesn’t guarantee to fix the RV sensors so with that said I can’t fault the product, we just might need new tank sensors. The product did do an excellent job cleaning the tanks and has a pleasant scent that is not overpowering. I wish it had fixed our sensors!
LRo
Reviewed in the United States on May 6, 2020
So we bought a travel trailer third-hand. We believe the black water tank was emptied before it sat up for the past year, but not cleaned out in any way. So we've been having to force down waste for a couple weeks. I searched online for a solution because the regular black water tank treatments meant to dissolve current waste and toilet paper weren't helping at all. I used a method described by others online, putting hot water with dishwashing liquid into the tank. I even added baking soda for some softening and slip. That caused a rush of gunk to flow out and resulted in a really awful stench (I guess it got some of that old stuff moving!), but still stuff was clogging near the top. Maybe doing it again would have helped more, but I went ahead and bought this product after reading the good reviews.Well, we emptied the tank again (or so we thought) before replacing the toilet. After removing the old toilet, we realized the tank was clogged again and the waste was almost to the top. I opened a Commando packet and poured it right in. I cleaned up where the old toilet sat, my husband installed the new one, and I checked the sewage level with every flush expecting that at some point it would go down.About 6 hours later, I noted that the level had gone down some. It was still pretty high up, but that was progress, and I knew it would take longer. Well, I just checked again. It's been 20 hours since I poured the packet in and I was shocked to find that not only is the waste too far down for me to see it anymore, but I can see sunlight coming in through the tank walls. I don't see one bit of gunk stuck on it either and the stench is gone. My gosh, this stuff really works, and it only took one application. Keep in mind that we throw away most of the toilet paper (all from #1 but not #2), so it's not overburdened with toilet paper--at least not from us.Expecting more of an issue, I actually bought the bucket of 40 packets and I was expecting to use one a week. I'll see how it goes, but I may not actually need this many after all. I do not regret the purchase at all though.
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