Ehhhh
I remember having something like this as a child and my parents would have me use it to show me where to brush better. I bought these for our 3 boys in hopes to do the same. They weren't huge on the flavor, it's a bit messy for a child (think purple spit everywhere in the sink), and honestly just made they entire teeth look super purple so it was hard to distinguish "needs more brushing and attention" from "you brushed well". I wouldn't purchase this again, but maybe will work better for someone else's household.
Rating: 2 stars