I have been using this Waterpik item for approx. one month and my teeth have never felt so clean. Very good quality for the price. It is a little louder than previous water flossers that I've used in the past.
4 years ago I was injured. I've lived with chronic pain mostly affecting my left shoulder, arm and hand. Consequently I was limited in how I could floss. I tried the one handed devices but success was hit and miss, mostly miss.
I purchased the WP900 and my problems literally ended. My water based floss is as good if not better than the traditional string method. Not only that, my gum health is improved.
The sonic tooth brush also does a much better job of cleaning my teeth than a manual brush. Great added feature is the 2 minute timer that pauses very briefly every 30 seconds.
I'd highly recommend this product to absolutely anyone.