Wikipedia says

The crypt system is not merely a group of invaginations <http://en.wikipedia.org/wiki/Invagination> of the tonsillar epithelium but a highly complicated network of canals with special types of epithelium and with various structures surrounding the canals, such as blood and lymphatic vessels and germinal centers.^[/citation needed <http://en.wikipedia.org/wiki/Wikipedia:Citation_needed>/]

Macrophages <http://en.wikipedia.org/wiki/Macrophages> and other white blood cells <http://en.wikipedia.org/wiki/White_blood_cells> concentrate by the tonsillar crypts as well, in response to the microorganisms attracted to the crypts. Accordingly, the tonsillar crypts serve a forward sentry role for the immune system <http://en.wikipedia.org/wiki/Immune_system>, by providing early exposure of immune system cells to infectious organisms which may be introduced into the body via food or other ingested matter.^[/citation needed <http://en.wikipedia.org/wiki/Wikipedia:Citation_needed>/]

However, the tonsillar crypts often provide such an inviting environment to bacteria <http://en.wikipedia.org/wiki/Bacteria> that bacterial colonies may form solidified "plugs" or "stones" within the crypts. In particular, sufferers of chronic sinusitis <http://en.wikipedia.org/wiki/Sinusitis> or post-nasal drip <http://en.wikipedia.org/wiki/Post-nasal_drip> frequently suffer from these overgrowths of bacteria in the tonsillar crypts.^[/medical citation needed <http://en.wikipedia.org/wiki/Wikipedia:Identifying_reliable_sources_%28medicine%29>/] These small whitish plugs, termed "tonsilloliths <http://en.wikipedia.org/wiki/Tonsilloliths>" and sometimes known as "tonsil stones," have a foul smell and can contribute to bad breath <http://en.wikipedia.org/wiki/Bad_breath>; furthermore, they can obstruct the normal flow of pus <http://en.wikipedia.org/wiki/Pus> from the crypts, and may irritate the throat (people with tonsil stones may complain of the feeling that something is stuck in their throat).^[/citation needed <http://en.wikipedia.org/wiki/Wikipedia:Citation_needed>/]

Here is an article about it:
http://www.therabreath.com/tonsil-stones-treatment.html
It mentions:

found in 75 percent of patients suffering from recurring tonsillitis



When food particles and dead cells build up inside the tonsil crypts, bacterial organisms that create bad odors are immediately attracted to the area. In this anaerobic or low-oxygen environment, these bacterial organisms thrive and release sulfurous compounds as a byproduct of their metabolic process. Patients suffering from tonsil stones are frequently faced with the decision to remove their tonsils completely or create a tonsil stones treatment plan that involves regular maintenance and the periodic removal of the calcified material...........


Painful swallowing, metallic tastes, ear pain affecting local nerve paths, coughing, choking, visible debris, and sensations that the throat is restricted or closing are all common symptoms linked to tonsil stones........... laser cryptolysis allows patients to keep their tonsils, which many improve the immune system and help inhibit some bacterial and viral infections.

Studies have linked tonsil stones to post-nasal drip, dry mouth caused by medications and cases of chronic or recurrent purulent tonsillitis..............

modern doctors are now using antibiotics and other methods to treat tonsillitis without surgery. Scientific evidence suggests that people who keep their tonsils are less likely to suffer from bacterial and viral infections than those who have undergone a complete tonsillectomy.


Common treatment and prevention strategies include regularly removing calcified material when it causes pain or discomfort. If you are suffering from tonsillitis and tonsil stones, gargling warm salt water can help remove the debris and relieve the discomfort

Another source calls them tonsil crypts and recommends gargling with one part water, one part any mouth rinse and one part hydrogen peroxide. CS would be perfect, I reckon.


cwww.drgreene.com/qa-articles/treating-*tonsil*-stones/‎
Surgial treatment is almost never necessary for this condition, but when needed, treatment consists of either removing the tonsils or removing the calculi. Troublesome large calculi that are not easily dislodged may need an ear, nose, and throat doctor to remove them.

Not too long ago, tonsils were routinely removed <http://www.drgreene.com/qa/tonsillectomies-and-adenoidectomies-ear-infections> for the sole crime of being swollen and inflamed. We didn’t understand, then, that the tonsils purposely accept the infections <http://www.drgreene.com/qa/bacteria-vs-viruses?lc=int_mb_1001> to prevent the organisms from traveling deeper, and to show the invaders to the developing immune system <http://www.drgreene.com/blog/2001/07/13/too-many-infections> to train it for the future. The tonsils are selfless protectors. As a child becomes an adult, the tonsils usually begin to shrink; the watchful guardians of childhood <http://www.drgreene.com/ages-stages/school-age?lc=int_mb_1001> are no longer much-needed.