I have had the same product before but after 3 years I felt a new one was required. It does a great job of cleaning between teeth and makes me feel my teeth are cleaner overall, in addition to brushing my teeth. It is easy to use and is not messy like some similar purposed products I am aware of.
This is my third air floss. Certainly they work excellently and I have had no gum bleeding since the first couple of weeks use and my dentist confirmed the improvement and it is a superb tooth pick.. However they do not last very long (maybe 3 years) and it is not possible to detach the pic for travel and then reattach it without it starting to leak.
I purchased my 2nd Sonicare product after the first stopped working.
This product didn’t last a year again, with the rechargeable battery no longer charging.
Complete waste of money, particularly as Philips support for the product is non existent.