I highly recommend everyone to keep in the bathroom cupboard a cup of baking soda submerged in water to make it paste-like. Rub a finger-tip's worth of wet baki

I highly recommend everyone to keep in the bathroom cupboard a cup of baking soda submerged in water to make it paste-like. Rub a finger-tip's worth of wet baking soda over your tongue after you've flossed and brushed your teeth and tongue (tongue cleaning is important - I use my toothbrush). Then rinse mouth and teeth with this baking soda and saliva for a minute or so, before spitting out. This is the most effective addition to a mouth cleansing routine I've found. I may apply this wet baking soda "paste" multiple times a day, especially after eating or when I feel a rise in mouth acidity. Also, when I happen to get acid reflux or know I'm going to throw up I pre-emptively keep baking soda in my mouth to protect my teeth from acidity.