Dear Arm and Hammer, I have purchased many of your tooth brushes. Your spin brush is an excellent tool, WHEN AND IF it works! What I mean is I’ve purchased 6 brushes over the past 6 to 8 months, and HALF OF THEM were defective!!! Either the motor quit within the first few times of using, or the heads didn’t function properly, with only the tip of the head working. They are priced great, but if you assume you’ll have to buy 2 to get one that works, it doesn’t become a good buy. I’ve purchased them from Dollar General and Publix in Melbourne FL, and most recently the one I purchased at Publix lost the motor the second time used. PLEASE HELP ME! I am a loyal customer, but do not feel I should have to buy two to get one of them that works!!!