Too soft, not sure if there is an option to get different firmness of heads.
No, I would not recommend this to a friend.
Response from waterpik.comBy WaterPik, Product Support, September 18, 2020
The toothbrush heads have been proven to be effective. However, we appreciate your feedback on preferring a different bristle strength and we will pass your comments on to our Product Design Team.
WAY too soft, unsure whether the bristles that are missing so the water tube has space is worth it... love the flossing, brushes too soft
No, I would not recommend this to a friend.
Response from waterpik.comBy Waterpik, Product Support, December 14, 2020
We are sorry that you are unhappy with the product. The ADA recommends the use of soft bristles. However, we appreciate your feedback and will pass it on to our Product Design Team.