I've always wondered what the secret was for large commercial gardens on how they control pests when the number of plants is so high there's really no viable way to spray them with something. There could be an overhead shower system but it won't get under the leaves where the worst pests live and as far as I know none of the organic products have a translaminar effect. For spider mites a top down spray system wouldn't do anything to control them or correct an infestation. The spray just won't hit 'em where the live.
So I was cruising around youtube for info which can be very dangerous due to the huge amount of horrible advice that gets passed around, but I found a real gem in the pile of shit. This fella was walking through a commercial garden that wasn't like an amazon warehouse, but my god it had endless rooms with endless plants. Dude says they battled mites in the past and it was a real bitch until they started running a sulfur burner at night for 2 hours. The stuff coats everything in the room. Leaf tops, bottoms, and stems. Not to mention your growing medium, buckets, floor, etc...
Dude says anymore than 2 hours/night will burn your plants. They apparently figured that out the hard way. His plants looked amazing and healthy. He says since they began burning the sulfur at night they haven't had any pest problems. My plants are on the 2nd day after spraying sulfur and they look better than they have in a month as I've battled these damned spider mites. It's almost unbelievable at $14 bag of sulfur is kicking the shit outta these mites, but my $230 bottle of forbid isn't doing jack shit. Same for floramite. I'd get 1-2 days of good looking growth then on the 3rd day when they're do for another spray the fuckers had already started up again chewing my new growth. We'll see how they look tomorrow on day 3. At this point I'm loving me some sulfur.