Black tank smell in coach

I have never done anything to my grey water tank in any motorhome. Do you folks treat it or flush it. I would be interested in the maintenance you do do to grey tank. I flushed my black tank frequently and have done all the the things like calgon and ice cubes etc...

Calgon is a water softener. and Ice cubes do not work. Think about just how many 5 lb bags of cubes you would have to put in there to accommodate the expanse of the width of a gray tank for it to even attempt to fill the bottom to do any good.!!:W

All depends what you allow to go down your RV kitchen sink on how bad a gray tank can smell. If you put grease down the drain and lots of food stuffs it sticks to the walls and goes rancid.

If you have every parked where they allow dumping of gray water?
1. you'd know first hand just how BAD it smells
2. You'd be on the band wagon of banning dumping RV gray water anywhere.

I pick up a quart of generic lemon cleaner. I dump the gray and add the quart of lemon cleaner, fill with water and dump again. 'everytime' I dump. Cleaner takes any grease/particles off the tank walls and keeps the tank clean and odor free.