Quote:
Originally Posted by RichS
We keep all valves closed until we dump. We also use a treatment called HAPPY Camper. It is an organic enzyme that has no perfume smell and it stops all smell in the black tank. So far it has worked very well.
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I second the Happy Camper treatment. We started getting a leftover smell about 6 months in, especially while in storage during the summer. Read about Happy Camper, tried it and never had another smell. Works great for us.