To use it, is simple: a full charge, a bit long, 24 hours. Then, with water or mouthwash (the second was my preference), stick the cannula to an interdental space and allow the device quickly clean what brushing may have forgotten. Repeat the exercise on each of the spaces and voila, a perfect jaw. True as it takes some time, it will instead once a day three, but the impact is significant and keeps clean longer teeth. Especially without the unpleasant side of floss in my opinion.
Seduced!