Be careful when using this product [SEP] The issue I had with this product is you have to hold it upright so the water could get through the tube. Not easy to clean all teeth as a result.  The blue  tip has a hole in it which made me think the water was supposed to shoot through it. Not so. It shot off the devise and went to the back of my throat.  It was a choke hazard. An easy fix is to not have a hole in the tip so it is not confused as anything other than a cap you are supposed to remove before use.  I was looking forward to using this product.  Not the quality or ease of use I expected.