Most helpful positive review
3 of 3 people found the following review helpful
Great for RV black tank buildup!
on November 11, 2011
I had the infamous mountainous clog in my RV tank and this took care of it in just a few days. I used three capfuls and let it sit with WARM WATER, and then flushed the tank from both ends. Repeated the process three days later, and in short order the tank was clean as a whistle. From then on I added just one capful after each dump and so far so good. It says on the bottle that lower temperatures will reduce the effectiveness of this product, so you might want to use something else if you are in a cold winter climate. The 32 ounce bottle is good for 500 gallons and actually lasted me over a year. Very pleased. I recently tried a different product because I didn't find this one right away, but I will be going back to Roebic, because other products all seem to have that porta potty deodorizer stench. This one is completely odorless. Note: This has not helped the erroneous sensor failure. But then, neither has anything else.