I give my coffee maker an internal cleanse with vinegar and water once a month to avoid scale build-up. I use 1/2 cup of white vinegar plus water to make a full pot, run that through my maker two or three times, and then run five or six pots of plain water through the maker until there is no longer any scent of the vinegar. I clean the pot and its basket and insert once a week in the dishwasher, and wipe down the case and heating element daily. I've been using the same drip coffee maker (with its glass, dishwasher-safe pot) for about five years.
On those occasions when I've run out of white vinegar, I use a tablespoon of citric acid dissolved in the first few cleaning pots of water, and then run five or six pots of plain water through the maker. Citric acid is just as effective as white vinegar for descaling but doesn't smell as strong; it's also inexpensive.
Sodium bicarbonate alone is not a sanitizer at any concentration, although it may be an effective cleaner, mostly due to its abrasive quality. It may be used in certain sanitization regimes, in combination with other chemicals and agents.
Food Safety Site of Clemson University does not list it as a sanitizing agent. According to 21 CFR 178.1010 - Sanitizing solutions (as queried through VLex), it is a part of two sanitizing regimes, but not the only component.
There are many non-credible, non-scientific sites that seem to claim sodium bicarbonate has anti-fungal properties, but I do not consider them worthy of consideration.
In terms of reputable sources, there is some evidence from NIH that sodium bicarbonate, at concentrations of 3%, can contribute to anti-fungal properties (at least for storing oranges), but it is part of an overall plan also including biological antagonists, not used alone.
I would not take this to mean that sodium bicarbonate is a sanitizing agent, which is a much stronger statement than simply reducing growth of fungus, which is only one possible type of pathogen. I simply cannot find any evidence to support this stronger statement.
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Another route for day to day cleaning is vinegar. I use a spray bottle with half white vinegar and half water at night on my counter tops before bed. (Use soap after cooking or prepping.)
The vinegar does a good job cleaning bacteria, mold, and germs. Once you get accustomed to the smell of vinegar, you will realize it deodorizes after the vinegar smell goes away.
A nice touch is rubbing a lemon on the counter beforehand, but it really doesn't do much other than smell nice and break down oil.