I do not disagree that they may always be there in most people, but as I said, in a Healthy person this may not be the normal condition!
It is like the problem people may have with candida, the body may always have a very small amount in it's presents, but as long as the body is Mineralized with enough Alkaline Minerals and the Digestive system is working properly, then Candida may not be a problem!
This is another reason why the saliva needs to be in the Alkaline range, so as to prevent this condition from existing!