Hello! I have the same problem! It is really gross.  I don't know how to
get rid of them.  I know i have bad breath.  How do you cleanse your
tonsils?  I just use a q-tip to pop them out and gargle with listerine and
then hope for the best.

I'm 23 and I've had them for 4 years now, and this is pretty much what I
know of how to get rid of them and/or keep them from forming:

-make sure you brush not only your teeth and gums twice a day (or more), but
also under and on top/back of your tongue... that's where the majority of the
sulfur-producing bacteria lives and breeds. This sulfur-producing anaerobic
(meaning they don't need oxygen to live and produce, they do just fine w/out.)
bacteria is a huge part of the "tonsil stones" and what causes the nasty
smell.
   You can also use a an oxygenating toothpaste and mouthwash, which
neutralize the anaerobic bacteria (try the TheraBreath brand)

-gargle listerine or deluted salt in warm water after meals and before bed

-don't snort drugs or anything really. Everything that goes into your nose
drips out a little bit into your mouth (it's called post-nasal drip). My
tonsil stones decreased a great deal after I ended my college-drug phase and
stopped putting cocaine up my nose.

-you don't need to do this and doing it too much can make your tonsils
irritated and sometimes bleed, but whenever i 'taste' the presence of a
tonsil stone in my mouth, I squeeze/pop it out and then gargle right away
while the crypt or opening is still kind of big. You can use a Q-tip or clean
finger for this.

There's really not much more you can do. If your bad breath becomes totally
unbearable to people around you and yourself, then you might think of having
a tonsillectomy. That's last-case scenario though, because your tonsils are
good things to have in your body; their kind of like your liver, they absorb
bad stuff that enters your body so that it doesn't go to other places/organs
where things could get much worse.

Hope that helps, and uh, also carry breath mints w/you all the time.
-Heidi