You might not need it but Im sure there are benefits. We have used ours pretty much full time for two years now. I add chemical after every dump along with a couple gallons of water. We have never had a sensor issue and our valves are working good. The chemical I use keeps the sensors clean and also lubricates the valves. For the few cents it costs, I will sleep better knowing everything is working just fine.
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2014 Fleetwood Bounder 35k
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