So far I've always cleaned my interdental spaces with dental floss and then rinsed with a mouthwash. Why not do both at the same time with this oral irrigator, I thought. However, the cleaning with the Sonicare is very -very, time-consuming. Once all the interdental spaces outside flush and then the whole procedure after once inside. I have thus increasingly used the floss until I finally realized that the oral irrigator is really only in the bathroom around. For me it was a smooth bad investment. I hope I can do that part still need me, if I have dental problems or inflammation ...