You have to practice on!

As the reviews, as so often, ranging from super to useless, there remains only the own test. Meanwhile, I have made friends with the part. As a substitute for flossing, I think it is not particularly useful because in normal, narrow spaces between the teeth back squirts a lot if you do not exactly aimed at the gap, which is difficult if you have no direct view of the action. So you have to develop a "feel". Speaking of syringes: I'm doing it now so that I close my mouth after preparation (in the mirror) - but probably makes everyone, right? Well suited as a replacement for the device is interdental, So if you have something more extensive gaps. Unlike flossing the brush be used several times and therefore bedürften a thorough cleaning. A cross-contamination is Air Floss hardly possible the addition of an antimicrobial agent (mouthwash) I think is essential, otherwise the spraying unfolds sometime an unexpected effect.
For gentle I did not just think the effect also because it works well so that a motor clamped a spring that a small piston pump drives the "letting go" and so produced the spray. This spring pulse is transmitted to the teeth. OK - you hold it out.
So - if you use interdental brushes, which, if they are good, also cost you money, you should try Air Floss.
Downgrade delivery. If you already have Sonicare, the charger does not need - but there is always this !? Instead, a second nozzle should be there.