What is wrong is simple. The tips are so flimsy it is like trying to get tissue paper beyween your teeth. It is a TOTAL RIP OFF. Any one who wrote a positive review either is being paid by the company or received a different product than I did (the WaterPik FLA-220 Power Flosser). I bought two and all the tips were the same). It is literally unusable. It kills me to give it one star (which you are required to do) since it deserves none.

what a relief to find this device. our 8-yr-old has braces, and even with those floss threader-thingies i was doing a terrible job trying to floss his teeth. i do much better with this. our 10-yr-old didn't have the patience or coordination to floss on his own until we got him one of these, and now he calmly integrates it into his evening routine - he just needed some supervision & guidance the first few times. i'll always use regular floss myself, but for those who can't or won't, this is a great alternative.

This was a throw in when I bought my Waterpik. It's OK, but if you have a waterpik, you shouldn't need it.

Not what I was expecting...it doesn't work at all for its intended purpose. I thought the inserts would be little brushes that would really do the job instead they are smooth and don't do much of anything.

It is nice to have this with you whenever you need flossing, it is easy to fit in a purse.