The Waterpik works on the premise of using water to blast the plaque and biofilms off your teeth and gums, especially along the gumline and in between the teeth. This all can be done in 60-90 seconds.
It sounds messy, but if you follow the directions and keep your mouth partially closed and lean over your sink, it is actually quite simple.
This is a link with several videos to explain the features of the different models and instructions for their use:
This is not the end-all of taking care of your teeth and gums though. You still need to brush with a traditional, sonic or rotating tooth brush and visit your dentist and dental hygienist for checkups and cleanings on a regular basis. Some people need to be seen more frequently than others, depending on many factors including oral hygiene methods, genetics and diet.
Check out the Waterpik water flosser, I think you'll like it!
- from Dr. David Clause