I've also eradicated them by spraying with citric acid every other day for 10 days. 2 tsp per liter with some yucca extract (or drop of dish soap). It can be a little harsh on the leaves, but they recover once the treatment is done. You have to spray every surface in the tent with it when you take the plants out to spray them. Spray the tops and bottoms of every leaf, stems, and just the surface of the soil. Don't get too much in the soil because the PH is <4. This treatment is no joke, so don't do it unless you KNOW you have mites. I'm playing around with lighter concentrations right now as part of my IPM program for my mommies. Mites are NOT easy to get rid of...also check out the site "natures good guys" and look at their predatory mites, that's another option, but I would still treat a couple of times with Citric acid, then follow up with a pure water spray a few days later before applying the predatory mites, just so you don't kill them off too. Honestly I don't think you have mites, but this info is good for everyone to have.
