💧 Walex Commando RV Black Tank Cleaner Drop-Ins, Ocean Mist Scent, 4-Pack (1 Year Supply) Review

We had problems with the pressure gauges. Used once for its intended purpose and now when my husband empties the water the gauges show really empty

Bought these to clean the black water tank sensor in my caravan. Passed two procedures to clean the sensor. Will continue to use them after each use. The product works very well.

Worked great, just follow instructions. The black water tank could not be emptied. Drained the tank to the hilt, threw one and filled the tank to the brim. After 24 hours I drained the black water tank and it was finally empty.

Black fuel gauges indicated ten years of full Wal-Mart liquid. Started with ice cubes rattling around for a couple of rides, then followed directions with Commando overnight, then rinsed with a spray bottle and our black tank shows empty for the first time!

They did a great job cleaning our black tank! We couldn't get the ads to show blank. It would stay at 1/3 full even if we knew the tank was empty (just emptied). So we did some research and came across this. There must be some tracks on our sensors. It cleaned them up well. It worked pretty quickly when we threw one and let it sit for 12 hours or less. And the tank wasn't completely empty when it was jettisoned. Worked great! This was a repeat purchase to have on hand.

Ok that's why I'm giving 5 stars not because it's the best product because we all know there are hundreds of people doing the same thing. My reason is that I have cpl others that are close to the same process, but this one did an extra cleaning/removal of some "things" that hadn't previously been washed off the black tank, and when I dumped it, was I left with never-before-seen pieces that looked like crumpled sausage casings? I was like "what is that and where did it come from” because from…