HAPPY CAMPERSExtreme RV Holding Tank Cleaner

Follow the directions. I left this product in for two days. Black water tank in boat. Did a great job.

As a lifelong RV owner and now a full rime RV resident, I have used nearly every commercially available chemical. I spent years perusing the Walmart shelves and even the local RV shops. I accepted the fact that tanks stunk. and it was just a by-product of the RV life. One RV that I had was particularly aromatic when opening a valve or driving it down the road. I started looking for something else. Perhaps there was something better.After a little research, I discovered the flagship product called "Happy Camper" Without exaggeration my tank odors were a thing of the past. Nothing. Zero. Unbelievable. So then I tried the "Extreme Cleaner" Now I end every season by cleaning all of my tanks. My gauges work, the odors are gone. Everything flushes EVERY TIME. I have not had a clog since using their products.All in all. I will never put anything else in my tanks BUT Happy Camper.

I purchased a fifth wheel from m a friend. They leave trailer on mountain for 4 months out of the year. They used a dump caddy with minimal fresh flushing of tank well it didn't smell to good . I have flushed system with 3 different times using 3 containers of product. Not impressed with how well it worked.i hoped it saying extream it would do the job fast.not the case. For normal flushing may work well. If you have similar situation I would use the less expensive stuff. It will need flushing several times and this stuff wasn't cheap

Use it to get the trailer tanks clean

Works exactly as it's supposed to, well worth using a few times per year for a deep clean of your black tank