Am very pleased with how this product functions. However, I noticed if you fill the reservoir full of water and place back on the base, it will leak slowly from the handpiece due to water pressure I guess. So I only place the tank on the base just before I use it. I would not recommend leaving it full overnight.
I would recommend this to a friend!
Response from waterpik.comBy Waterpik, Product Support, March 22, 2016
Thank you for your feedback. If you are still having issues with your product please contact our team of Product Support specialists at 800-525-2774 for assistance and warranty information.
We do have some very helpful information on our website including illustrated instructions and a how to video: https://www.waterpik.com/oral-health/how-to-floss/