As someone who had braces (twice) and now has a permanent retainer against my lower teeth - I was struggling to keep my mouth 'clean'. Within days I noticed a cleaner smile, brighter teeth and (hey, why not!) better breath. Flossing alone was just not enough and now - one month later - I will never go without my WaterPik Flosser again. I am a customer for life.
I like my waterpik. I use regular floss plus the waterpik. It took some getting used to to stop spraying water all over the bathroom. Also the container must be securely seated or no water is sprayed although the motor is running. One thing I would recommend is for the company to package the replacement tubes in packages of 4's instead of the assorted pack.
I've needed a Water-Pic for years and finally got one. I've had problems with plaque build up, especially the older I get. I can't believe the difference in the feel of my gums and mouth. I can honestly say that I can really tell a difference since I've been using this product.