I tried the blue Liquid Ice things a while ago, and they are pretty effective. They're basically like those breath drops in a little disolvable capsule.
However, I've found that the cinnamon ones to be absolutely awful. Unlike Ice Breaker's regular cinnamon mints, the cinnamon Liquid Ice drops don't really taste a whole lot like actual cinnamon. It's like they just addded the cinnamon flavor to a regular mint one and put them in a package. Not only that, but they had a really strange after taste to em.