We never want you to feel disappointed when using your iO2, Chandler. Our products undergo rigorous quality checks to reach you in perfect condition, allowing you to get the ultimate teeth-cleaning experience. The iO series 2 is designed with openings on the brush heads to allow water to flush through the brush head tube and let air inside. This venting ensures the brush head dries sufficiently after use and reduces moisture inside the tube. What you have described can occur if the brush is stored in a location exposed to mold and bacteria, and the plastic comes into contact with ingredients of a corrosive nature. Certain ingredients used in those types of products can make the plastic porous, allowing dirt and moisture to find places to settle. To avoid this, it's important to always rinse your brush head thoroughly after each use to prevent residue from building up and blocking the openings. Your satisfaction means everything to us, and we'd like to learn more about your experience with your iO2. When you have time, please give us a call at 1-800-566-7252, 9 am-6 pm EST, Monday-Friday.

We're disappointed to hear you don't like our iO Series 2 compared to Sonicare, and we're happy to help you. The timer is to let you know the recommended time for brushing has passed. It doesn't shut off automatically in case you need a little longer brushing. Cleaning your toothbrush is ideal to keep it at the optimal performance. If you prefer a toothbrush without an active timer, we recommend considering other models within our product range that offer customization options. Our higher-tier iO models, such as the iO4 through iO10, provide the ability to control and adjust the timer settings through the Oral-B app. With these models, you can personalize your brushing experience by modifying the timer duration or turning it off, according to your preferences. We value your feedback and would appreciate you giving us a call at (800) 566-7252 for assistance with the brush and any questions you may have.

We're sorry to hear you didn't have the results you expected from the iO Series 2, Jamie, and want to assure you that we have many quality checks to ensure your teeth are left sparkling clean with ease. We'd like to learn more so we can help, as well as share this with our Quality Team. When you have a minute, please get in touch with us at (800) 566-7252.