My review is for Happy Camper holding tank treatment. We are in Lake Havasu Arizona where it gets very hot in the summer. I have tried different products to curb the odor in the black water tanks in the heat. Happy Camper is by far the best product I have found. We have stayed up to a week in Las Vegas in the summer without dumping the black water. No odor in the camper and no odor after dumping. All my sensors are still working on a 2007 TC. Their website says you can use 2 ply TP and gives you a test to see if it is compatible. I highly recommend it. I get it from Amazon and use it as directed.
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