LINK The very thought of not using toothpaste goes against everything I stand for, though an interesting concept indeed. One cannot deny the utility for travelers, long distance hikers, etc. Not to mention a person could keep this with them during the day if they are ultra concerned with having clean teeth. Crest & Colgate might as well get to work on their smear campaign now, because I feel like this could be very popular in the future. No batteries? No toothpaste? Forever? I call that efficiency.