Your dentist may also recommend using an antiseptic mouth rinse to help clear away bacteria.

CNN: Gingivitis

Using an antiseptic mouth rinse, if recommended by your dentist.

CNN: Gingivitis

The wave breaks at the river mouth so you can rinse off in a fresh water pool with a view of light green pyramid-shaped mountains in the valley.

BBC: Learning to surf in the land of giants

"We effectively use it to rinse our mouth three times and then spit out, " explained Daniel Limonadi, the Curiosity surface sampling phase lead at the US space agency's Jet Propulsion Laboratory (JPL).

BBC: Nasa's Curiosity Mars rover to scoop sand sample