I have used vinegar to run through a coffee pot many times but I don't think I'd use baking soda...just plain vinegar does the trick for me.

I've followed the recommended procedure on mine and it's worked just fine. Don't see any reason to use baking soda, except perhaps for cleaning the carafe if need be.

Instructions were to pour a pint of white vinegar into the well, run it for 30 seconds and shut it off and let it sit to work on the buildup in there. Then finish the cycle. Run a carafe of clean water through afterward. Could do the procoedure twice if you wanted I suppose but I never have. And I always run 4-5 containers of clean (actually filtered) water through after the vinegar treatment.

Frequency depends on the type of water you have and the useage of the maker.

The instructions for my Mr Coffee years ago (like 30 years) said to use plain clear vinegar to clean it. I ran a couple cups through a normal cycle, followed with about four fillups of clean water , until the smell was gone. There's also a commercial product called Dip-It, which I have never tried.