I bought mine about a month ago because my teeth were getting a gray tinge. I am very diligent about brushing and flossing my teeth. I use the my water wik every night and fill the reservoir 4 times. My top teeth are looking great. For some reason my bottom are not. Don't know why?
I bought this Waterpik about a month ago and I am mad that I didn't do it sooner. I chose this model because I travel for work and wanted a Waterpik I could take with me. I am not good at string flossing, but tried to force myself to do it once a day. Now, I water floss at least twice a day and on weekends three! You will notice an immediate difference in how clean your mouth feels once you start using the Waterpik. I just had a cleaning and when I told my dental hygienist I had made this purchase she could not have been happier. She gave me some pointers on using the Waterpik more effectively which I will do. I plan to purchase a tank style Waterpik next month as I want the larger reservoir for home use and I will keep this for when I travel. Get one of these, you won't be sorry.
I have had to use dental floss,therefore the spacecraft nag between my teeth has gotten smaller. I can not believe how well my water pick cleans my teeth.
I love the portability and compactness of this model of the Pic but find it a bit more clumsy to use than models in which the water reservoir is separate.