Whatever you decide to use, these are serious pests. Be sure to follow up in 2-3 weeks to get the hatchlings/eggs.
Lots of growers don't completely rid their grows in the first battle or two. I've read that alternating your active ingredient in subsequent sprays works, as mites do develop immunities/resistance in their struggle to survive . . . and ruin your life!
Like use permithrin today, pyrethrum next time you see a live one, etc.