Good for something, but not much
I like the idea but i found the overall product to be lacking.  It does a nice job of making my teeth smooth, but it doesn't really remove any stains.  Also, i found it only useable on the front of my teeth, it is to large to use on the interior side of the teeth.  Does not have enough power either, if pressed to tooth with any pressure it will stop completely.
Rating: 2 stars