We know that acids make the bacteria reproduce much faster. In order to decrease the production of odorous sulfur compounds, we need to neutralize the acid environment. Our products are the only ones to be pH balanced in such a manner to do this most effectively. That is why our products do not leave a strange aftertaste like our competitors products. Another dentist told me that his patients complain about the taste of my competitor's products.
All humans have oxygen in their oral cavity when they breathe.
You are missing the bacteria totally. The white coating on the tongue is a collection of sulfides that come to the surface. The bacteria are much farther down and cannot be removed physically. The bacteria involved in this problem are not infectious bacteria. They are actually beneficial bacteria which are assisting us in digestion.