 Because we've known for 50 years that that's what xylitol does in the mouth, and it does it in the nose too. And that is what xylitol shines at doing. And we've known that for 50, I want to say 54 years, 55 years now, because the first study about xylitol was actually published in 1969 by a doctor, Kalko Mackin. And since then, we've got thousands of studies showing how it improves your oral health by getting rid of the bacteria that create tooth decay.