I purchased this just a couple weeks ago and am still getting used to using it and the "off" button. I cannot seem to find it ...I keep hitting the on button only. Other than that, seems to work just fine.
I would recommend this to a friend!
Response from waterpik.comBy Waterpik, Product Support, June 9, 2015
Thanks for your feedback! We have a How to Use video that might help: https://youtu.be/N3vqMINKtWQ