I heard somewhere that dog's mouths are cleaner than human mouths. It is also said that the mouth of a Tyrannosaurus Rex was so gross that you could die just from being inside of it. There is a canker sore in my mouth that is bothering me. The Internet says that Lysine is a great way to get rid of them. There isn't any of that in my house so I am using yogurt. In the 80's there was a movie about brainwashing alien yogurt called The Stuff. It was stupid.