Right on Gene. When I emptied my black water tank after using Happy Camper there was no I mean no odor. I talked to the folks who sell this remarkable stuff and the lady told me they once left their black water tank full sitting in the sun for a 3 month period when they got back to AZ they discovered this mistake. Emptied the tanks and guess what NO odor, I wouldn't use any other product. Sorry to sound like a TV commercial but this stuff is really remarkable. And no I don't work for the company.
Don