We bought this about a month ago, the first couple times of using it a lot of stuff came out,not nearly anything now,so it must be doing what it's suppose to. Sure beats string flossing,especially if your gag reflex is as high as mine. Only negative thing about it is that the tip for general use is near impossible to find in our near by stores.
I am amazed that particles come out of my mouth after I've scrubbed my teeth. I have always thought I did a good job brushing my teeth. This gets everything, including under my implanted teeth.
Love how clean this makes my teeth feel! Just wish it was quieter and cord just a little longer so Im not limited as to how close i have to set it to the sink because it makes a mess.
Purchased about 3 weeks ago. Works well so far. Only negatives are it's noisy and had to buy second set of pics for the other person using it. Took a few times using it to figure out how to keep it from leaking.