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Walex

Walex Commando RV Black Holding Tank & Sensor Cleaner - Eliminates Waste & Paper Buildup, Restores Sensor Function, Lubricates Valves & Seals, Advanced Enzyme Formula; Dissolvable Packets, 40 Pack

    • Based on 2,203 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Apr 8
Order within 6 hours and 6 minutes
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Size: 40 Count (Pack of 1)


Features

  • CLEANS RV HOLDING TANK AND SENSORS - The RV black tank and sensor cleaner helps restore sensor function and lubricates valves and seals, ensuring your RV's black tank functions smoothly.
  • ELIMINATES WASTE BUILDUP - The RV tank cleaner eliminates waste and paper buildup from tank walls and sensors in 12 -24 hours. For stubborn issues, Commando can be safely used for a week or longer.
  • ADVANCED ENZYME POWER - Our super-concentrated formula contains powerful natural enzymes, breaking down waste and paper ensuring a thorough cleanse for your RV black holding tank.
  • EFFORTLESS MAINTENANCE - The RV holding tank cleaner is septic system safe. Continued use of Commando every 3 months will help keep your black tank and sensors in good working condition.
  • MADE IN USA - Walex has been a global leader in developing and manufacturing premium odor control and sanitation products since 1987.

Description

Ever experience false readings from sensors or a continuous odor coming from a black holding tank? If so, most likely there is residual waste build-up on the holding tank interior walls that have dried and caked on the surface wall. Using COMMANDO Black Holding Tank cleaner removes odors and sensor build-up in as little as 12 hours! It's made from a super-concentrated scientifically developed formula that is filled with natural enzymes to penetrate the walls and sensors to break down waste and paper build up in black holding tanks. Not only does COMMANDO Black Tank Cleaner work to clean your holding tank and remove odors, it's also used as a preventative treatment to keep holding tanks healthy and in good working condition. This product is perfect for consumers and for dealers who need to clean holding tanks and remove odors in rentals or sales of used units.

Brand: Walex


Item Form: Tablet


Scent: Ocean Mist


Specific Uses For Product: Black Tank


Material Feature: Non-Toxic


Manufacturer: ‎Walex


Brand: ‎Walex


Model: ‎CMDOBK


Item Weight: ‎3.56 pounds


Product Dimensions: ‎7.5 x 6.5 x 5.5 inches


Country of Origin: ‎USA


Item model number: ‎CMDOBK


Manufacturer Part Number: ‎CMDOBK


Special Features: ‎Non Abrasive


Date First Available: January 25, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Wowzers!
Size: 40 Count (Pack of 1)
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. ... show more
Reviewed in the United States on May 6, 2020 by LRo
    • Worked for me
Size: 4 Count (Pack of 1)
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.
Reviewed in the United States on October 28, 2024 by Amazon Customer
    • Didn’t work on our sensors
Size: 4 Count (Pack of 1)
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!
Reviewed in the United States on June 26, 2023 by Suzanne
    • Works!!
Size: 4 Count (Pack of 1)
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. ... show more
Reviewed in the United States on September 30, 2024 by Mark Peden
    • This product works!
Size: 4 Count (Pack of 1)
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!
Reviewed in the United States on September 19, 2024 by Jane
    • Less effective then other brands
Size: 40 Count (Pack of 1)
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.
Reviewed in the United States on May 16, 2024 by Ewriter
    • Keeps RV holding tands clean and eliminates odors.
Size: 4 Count (Pack of 1)
this product has kept my RV holding tank clean during an 8,000 mile trip over 2 months.
Reviewed in the United States on February 24, 2025 by Gene
    • Works great,cleans black tank
Size: 4 Count (Pack of 1)
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
Reviewed in the United States on July 15, 2024 by Robert

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