Unique Clean-It Liquid RV Black & Holding Tank Cleaner, 32 oz

This stuff does the trick for RV Black Tank Maintenance. Love the whole line this company offers and use it exclusively over the past 4 years of camper ownership. Great value for the money, doesn't smell bad & gets the job done. Just follow the instructions.

We recently used this on our 5th Wheel black tank and cannot say enough good stuff about it!! Our tank sensors began reading FULL after our second or third trip, even with excessive rinsing and cleaning after each trip. We are in our second year of our ownership and travel just accepted the fact that our sensors (as most complain about) would never work again. So we followed the directions on the bottle. Filled our black tank (49 gallon tank) added the bottle of cleaner to the tank and parked it for about 2 weeks (in between trips). We dumped our tanks when we arrived at our next campground, dumped our tank and rinsed well. No odor, no issues and best thing yet? Our sensors once again read accurately!!! It's a little thing, but it's a great feeling! We use a few of the Unique brand cleaners and treatments and have been thrilled with the ease of use, quality and performance of them. Good size bottles and I feel the price is well worth the results you receive. Nice to have products that are seal and tank friendly and safe to let sit in the tank for extended period if needed. Highly recommend this deep cleaner and all of the Unique products for care and maintenance of our rig!

This removed the "pyramid" from my black tank. I filled tank and added full bottle at home two days before a trip. Drove and dumped at the campsite. Shocking how much "stuff " came out of what was supposed to be an empty tank. Tank light back to E

Good product for cleaning the RV black tank.

I purchased a 32-ounce bottle of "Unique Clean-It" on 25 August 2024, and the bottle arrived on 28 August 2024. I had read a couple of favorable online reviews and watched a YouTube video regarding this product and thought I would give it a try. I live full-time in a 2024 fifth wheel RV. The black tank sensors started reading “full” after about a month or so of routine use. Routine back flushing had no effect on the sensors. On 29 August 2024, I emptied the black tank and back flushed it using about 25 gallons of water. I let this water drain, and I checked the sensor (still “full"). With the black tank drain closed, I added 45 gallons of water to the tank using the back flush connection. I also added another 3 to 5 gallons of water to the tank by holding down the foot flush lever in the bathroom. My black tank is supposed to hold 53 gallons, but I did not want to fill the tank completely up because I intended to continue normal use of the commode while Clean-It was working. I poured the entire contents of the Clean-It bottle into the commode and let it work for five days. I was skeptical about the expected results. I drained the black tank after five days and back flushed the tank with about 25 gallons of water. After the tank had finished draining, I checked the sensor. Only one LED came on. Unique Clean-It definitely worked in my case. Very pleased. Other considerations: I always keep at least 20 gallons of water in the black tank, and I am a regular user of “Liquified RV Toilet Treatment.” I am trying my best to avoid black tank problems.

Left it in for over a week! drained my tank! and could tell a NOTICABLE difference! the smell was practically gone!

Easy to use & worked great

I like this product the best for my black tank!