I use this dental jet recent weeks with one to three times daily. At first the jet caused bleeding gums same position 1 (least). Knowing this very fragility during manual or mechanical brushing, I consulted my dentist gave me a special toothpaste and since everything is fine. I can use the position 2 that I do not find so much stronger than the 1 but with more continuous jets. The effectiveness of these jets is spectacular and food residues are dislodged dental interstices in the vast majority of cases and give a feeling of cleanliness and freshness even before brushing and toothpaste. The tank is fairly easy and a "full" is generally sufficient for complete cleaning in the same position on the mouth 2. against the slipcase and the "déboitage" said reservoir, necessary to keep it clean and dry, are a little more delicate and make me fear for the survival of the joint, but until today no problems. I took this nomadic model especially to avoid too bulky device and because I had read a lot of negative opinions on the life of the connecting pipes between the tank and the nozzle. I'm therefore not serve me on a journey where size and weight are still not too significant deterrent. The grip is less obvious at first with the fixed devices, given the thickness and weight of the machine, but we made it fast and it is not an impediment to its smooth operation, of especially since the jet can be directed by rotating the nozzle about its axis and that there is no pipe which may interfere. In conclusion, this is an article which I have difficulty passing me after every meal and that gives me satisfaction with the criteria of space, mobility and convenience that I set for myself, in addition to the efficiency.