Mouthwash or mouth rinse is a product used for oral hygiene. Antiseptic and anti-plaque mouth rinse claims to kill the germs that cause plaque, gingivitis, and bad breath. Anti-cavity mouth rinse uses fluoride to protect against tooth decay. However, it is generally agreed that the use of mouthwash does not eliminate the need for both brushing and flossing. In the absence of a ready-made mouthwash, gargling with plain water is preferable, to remove food particles, sugars and other pollutants in the mouth.
Mouth washes may also be used to help remove mucous and food particles deeper down in the throat. Alcoholic and strong flavored mouth washes may cause coughing for this purpose. Use of the voice, either quietly or louder, is much better when the throat is cleared of food and mucous.