It works!
What I like: it's small, fits ok into the mouth (not real comfy for moi but that's ok), whitens my teeth, and helps my overall dental health. what I don't like: it goes on too easily and the lights are bad for your eyes. Not designed well. Charging it is a hassle because the connection isn't great and then the awful lights flash on continuously while charging. Aside from that, I relax in bed until its beeper wakes me up. Rinse it, put it away and rest knowing I did the extra thing to keep my teeth healthy. This is on top of the brushing, natural toothpaste, a great floss, etc.
Rating: 4 stars