Buy a Different Design
We bought this in November and have had mold issues within the brushhead mechanism. We have cleaned it, even soaked it in bleach but it's a PIA to continue to try to cope with the design flaw. Additionally, it is true that the handset is very difficult to keep clean and collects water and toothpaste residue. Even the threads around the outside of the handle are difficult to keep clean.  We will be looking at either Oral B - Pulsonic, or another SoniCare with the pin-type brush head attachment.
Rating: 2 stars