profresh smartmouth therabreath oxyfresh to name just a few, if you really want the answer to chlorine dioxide ask anybody on badbreathhalitosis.com they will tell you that it is poison, the only product that has helped some people to a degree is smatmouth because it has zinc in it, read up on zinc oxides and you will see.You seem new, after you spend 10 or more years trying to figure it out you will see where most of us chronic sufferers come from