I bought this a couple of weeks ago and I love it. I can assure you no food stays on your teeth. Easy to use, quick, and you don’t have to deal with flossing every tooth with the string that takes for ever. With the water is just simple and quick. I use the water warm (not to hot or too cold) and it feels nice. I recently went to my dentist for a cleaning and I told her I bought a waterpik and she says it is a great investment because it does the job!! I bought this for my daughter who has braces, but the whole family uses the waterpic. We just clean it well after every use. Works for everyone.