I love brushing my teeth. Every time I do it I feel like I’ve just done my mouth a tremendous favor and I’m about to head out on some glorious journey towards a life of excellent dental hygiene. What I don’t love, however, are the mouth rinsing options… you either need to keep a little cup on your sink which will need to be thoroughly washed after each use, or a little pile of disposable (and not-so-environmentally-friendly) disposable cups. No more, kids. WATER FOUNTAIN SINKS HAVE ARRIVED.