The advice from the predatory mites vendor is to wait two weeks after the use of Bifenthrin:
What Chemicals are Harmless to Predatory Mites? – NaturesGoodGuys
My mites were mostly in my phals, so I looked at a few under the microscope and the look a lot like Tenuipalus pacificus, “Phalaenopsis mites,” and Amblyseius swirskii was suggested as a good predator mite for this species. I have been trying to get rid of them with soap and alcohol for months. I did a big release (4,000) in my Phal collection about 6 weeks ago, and now I’m using the slow release sachets to try to keep the population down. It seems to be working so far, we’ll see—I haven’t seen any mites in the release area (although I’ve seen them on isolated phals elsewhere in my house, that have since gotten sachets). I’m trying to avoid having to use a miticide as I grow in a bedroom next to my kids room.