 I can tell you what I use because I've whittled it down. I did it about 20 years ago in the investigation of my oral health, my oral cavity, keeping it healthy because I know that if I keep my oral cavity, and this has been proven out in scientific studies, people who do a good job in the oral cavity with flossing, brushing, taking care of their teeth, seeing a dental hygienist once in a while and a dentist,