m0useanswered grow question 9 months ago In agreeance with Organoman here, Don't spray in flower.
predator mites are good as a preventative, lots are need to cull an active infestation, and they run the risk of getting stuck in your buds as well.
Do a bud washing to get as many of them out as possible, and keep the RH as high as you can in flower to help prevent their breeding habit. mites like dry aired conditions.
Good Luck!