I purchased this for my kids, and they love it and I love it too! I saw the commercials for this product and it reminded me of the color tablets I had used once as a child when learning about how to brush properly. My children immediately enjoyed the idea of blue teeth, so it was easy to get them to try this. What is great is that it is fun for them as well as educational. It did a really great job of letting them see for themselves what they needed to do to brush more effectively. They love the before and after of going from blue to white. The best part is that it lets them see the results of their hard work in using the right type of brush strokes and taking the right amount of time to brush. Its hard for them to imagine invisible germs or hard to see plaque, but with Agent Blue they can see the blue spots between their teeth and at the gum line and know where to spend a little extra time with the tooth brush.