you can try one of these methods
1. spray with water directly under the leaves 'will dislodge most of them away)...do it multiple times
2. neem oil
3. my favorite ...organophosphate (some will not agree with this but works the best for me)....malathion, dichlorvos, amitraz
4. alcohol swab...time consuming
5.i had been told to use garlic brew but i personally haven't try it out
6. i have tried individual hammering ...to newly acquire plants but it is easier to just slide the leaves between your two fingers, will crush and dislodge most of them ...but if you are dealing with large amount of infected plant....still time consuming

i included a link here, there is a biological control of the mites also it did mention they might arise from infected soil area, but most of my mites problem arises from newly acquire plant.
http://apps.rhs.org.uk/advicesearch/...e.aspx?PID=190
lucky for me, i collect catasetums, so either i try getting a dormant plant, bulb divisions or sometimes i trimmed the leaves of the new plant if i see any spots underneath the leaves regardless it is moving or not