Had some fungus gnats, and some thrips to deal with recently. Here's what I did.
Dr Earth Final Stop for foliar to the plant, soaking it down good, hand rubbing it to the tops, and bottoms of all leaves. Then doing the same for all exposed soil, even the little drain holes of the pots where soil is accessible. Literally drench the shit out of it. Repeated every three days for two weeks, DE & Cinnnamon on the top soil, and two spinosad soil drenches 10 days apart is what eradicated them for me.
Haven't seen a bug on them since, though it did take a bit of a toll on the plants while I was treating them. Had a good bit of leaf edge burn/damage to everyone from it, but they've all bounced back from it with a vengeance. Happy and healthy now. I wlll say that none of the plants were that large, so it was easy to foliar all of them very thouroughly.