Originally Posted by NavyChief
That's what I thought too at first. But I figured for $15 and 5 minute installation, minimal loss at worst. 3 Trips later that sewage smell has not come back. Coincidence?
Only if you have not changed ANY thing else.
Amount of water used and the tank treatment alone could make a difference.
We use the blue stuff from Walmart with no issues, 5 gallons or so of water and the recommended amount of treatment.
Some people suggest you have the vent fan shut off when flushing.