Try tongue cleaners
In most cases, bacteria accumulate in regions of the mother where your toothbrush can not reach, such as the back of the tongue. According to scientists, people who have a white tongue are prone to accumulation of bacteria [3], dead cells, and microscopic food particles.
You can also use tongue cleaners, such as scrapers and brushes to wash the back of your tongue. They also help reduce bacteria causing odor in the mouth. When using a tongue scraper start behind your tongue and gently move forward to drag the bacteria residue to a more reachable region of the mouth. Rinse your mouth continuously until you don’t see any scraper on your mouth. Experts advise people to use a tongue scraper every day or after consuming substances containing garlic or onion.