I loathe flossing. So sue me.But don't convict me of gingivitis. This Water Jet has removed all the little "sore spots" that I was concerned about - they show up as places where the bubbles collect if you gargle with half-strength hydrogen peroxide - with two uses. That's a single day's usage. You bet I'm going to be using it twice daily from now on!Thanks, Interplak!