[tuga]

I pour a quart clorox down the sink AFTER I have dumped my sewer tank. Then I wash a load of towels using hot soapy water. Next time we use the coach this mixture is sloshed around and the sewer tank is cleaned. The clorox kills the bacteria and the odor dies with the bacteria.

If your wife is like mine, she doesn't believe that so we use Always Fresh in addition to the above.