Fiber coming out in first week. Planned obsolescence is apparent.
Response from waterpik.comBy Waterpik, Product Support, October 10, 2021
We are so sorry that you are having an issue with your Flossing Brush Head. We absolutely stand by the quality of our products. We would like to learn more about your experience to see what we can do to help. Please email us directly at smreviews@waterpik.com.