Mouthwashes are products used to help you maintain a good level of oral hygiene. There's many different types of mouthwash, Antiseptic products and Anti-plaque washes aim to kill bacterial plaque which causes a number of dental problems including caries, gingivitis and halitosis. Anti-cavity mouth washes tend to use fluoride as a means of protecting against tooth decay. Using a mouthwash should be used in conjunction with brushing and flossing to ensure a high standard of oral health.