honestly ladies bugs have never worked for me, 10+ years. they only eat spider mites as a secondary option, and eggs are even lower on the food chain. plus those little bastards hide in your soil(if thats what your doing), so a systemic mite killer may be the best option. only thing thats ever been 100% successfull for me is neem/karanja oil mix with yucca extracts, a newer product called sns 217, and something thats new to me, quantum apocalypse from entomo419.com. if you feed your soil neem, your gonna need to add some kind of beneficial microbes back in after. as far as mites go, start from seed/clone and assume they always have them. good prevention techniques will save your behind a lot and you wont ever know
.. ive wasted lots of money in this war, but i(we) will win