I assume you mean to remove them ?
Okay, first you have to make a temp viv for your bearded, a rubbermaid bin with all his/her lighting.
Second remove everything and wash well in hot Dawn soapy water, than outside to air dry.
Take the viv outside and cover with plastic wrap, making sure you seal it well.
Let that viv "cook" outside in the full sun for 2 12 hour periods.
Wash with dawn again, and air dry. The Cooking will kill both mites and eggs.
In the meantime, wash your dragon in Dawn, bringing the water level up to his head. The mites will dash to the highest spot, making for his head, where you can use an old soft toothbrush with the Dawn to scrub them off. The Dawn will stun them, so they don't move around much. Do this 2-3 times, making sure dragon doesn't drink any of the water, and rinsing well each time after.
You will want to scrub whole body, to get any hiding under the scales.
Keep repeating this daily until you don't see mites anymore.
Hope this helps out !
Janie.