Thank you for sharing with us, Lolo. Our team is always performing quality tests on our Oral-B Products to provide you with the best brushing experience. If the brush heads are a little too hard for you, we recommend giving our Oral-B iO Gentle Care Replacement Brush Head a try. We'd also like to learn more about your experience, and would appreciate you giving us a call at (800) 566-7252.

We're sorry to hear you purchased the wrong brush heads for your Oral-B toothbrush, Tina. With the exception of iO and Pulsonic models, all of our brush heads fit on any of our other electric toothbrush handles. Please give us a call at (800) 566-7252, and we'll be happy to help you get the right brush heads!

Thank you for sharing this, Kysa. Our Oral-B iO brush heads are designed to fit only our Oral-B iO Toothbrushes. We recommend trying our other Oral-B brush heads, as they will fit all of our other Oral-B Power Toothbrushes. If you have any questions, please feel free to give us a call at (800) 566-7252.

We're disappointed to hear this, since we never want to leave anyone feeling less than impressed! We do understand that preferences vary, so we'd like to learn more about your wife's experience and help. Please have her give us a call at (800) 566-7252.