I can't emphasize the importance of using a tongue cleaner enough. When others have a problem, I will certainly refer them to you. The medical editors for the ABC and NBC networks, Dr. Timothy Johnson and Dr. Richard Price respectively stated on the show that daily tongue cleaning should be part of everyone's oral hygiene . Reader's Digest had published the usefulness of tongue-cleaning to improve oral hygiene and breath odor as early as 1994. Let face it.
Most people are shy to be pioneers and leaders.
Even good changes take time. Yes, you may not find tongue-cleaner at your local store for a couple of reasons. Firstly, your local store might be a little slow to catch up. Secondly, the profit potential of tongue-cleaner is much less attractive than selling mouthwash, toothpaste, toothbrush and floss. Repeat purchase is far in between.