Unreliable
This device was great when it worked, but it would not keep going.  After about 1/4 of my mouth, it would stop pumping. I had to turn it off and wait a while.  SUPER annoying.  And the jet head was difficult to get in correctly -- it would come out several times before catching correctly and staying put.  I am not normally challenged by devices, but this one was beyond my patience.  I ended up throwing it away after 3 months.<br />I WISH it had not had these defects as the jet of water was the best I have found.  ARGH.
Rating: 1 stars