I don't "get it"
This is supposed to show you where the plaque is in your teeth.  I'll say that my 8 year old loved these and thought they were fun, but I just thought it was a giant mess in your mouth.  Everything was purple, and I'm quite sure my mouth isn't 100% plaque.  Maybe I was doing something wrong, but I didn't see the value in this at all, except that it made my daughter happy, and I was happy to see her brush until it was all gone!
Rating: 3 stars