Tongue scrapers can generally be used once every two to three days, depending on the individual's oral condition.
If the oral hygiene is relatively clean and the odor in the mouth is not particularly severe, you can use a tongue scraper once every three days to help remove bacteria and tongue moss from the tongue.
But if the oral conditions are not particularly good, there is often an odor in the mouth, and if you don't brush your teeth and rinse your mouth in time after eating, it may cause food residue to remain in the mouth or tongue area, requiring the use of a tongue scraper every two days.
In daily life, oral hygiene should also be done well, and after eating food, one should brush their teeth and rinse their mouth in a timely manner.