A water flosser, also known as an oral irrigator, is a handheld oral care device that directs a stream of water between your teeth and gums, removing food debris, plaque and bacteria. Combined with daily flossing, a water flosser enhances your daily oral care routine. There are many types of water flosser like cordless water flosser, countertop water flosser, travel water flosser and more. While there are many types of oral irrigators all feature a reservoir to hold the water, an electric motor to power the pump, and a special nozzle. The motor and pump cause a stream of pressurized water to flow from the reservoir, through the nozzle, and between teeth, to remove plaque food particles and bacteria.