lololol I’m glad I saw this comment.
I’ve done a lot of experimenting on spider mites with indoor gardening with various forms of lighting.
HPS, MH, Mercury vapor, homemade LEDs, fluorescents etc etc
Spider mites like to hide from the light on the bottom of the leaves. I used to take a flat LED panel and put them under the plants near the trunk of the plant. It confuses the spider mites and they don’t know where to hide. LEDs are required because all other light sources are too hot and intense to pound the bottom of leaves.
The bugs are tiny and light colored. I think the eggs are also white and they lay on the bottom of leaves. The light translucent colors tells me these bugs are UV sensitive. Confuse the bugs so the sun cooks them for you.
This at least makes it easier to apply some sort of poison or deterrent.
Unfortunately, this does not fix the issue with spider mites spending time in the top layer of the soil.
Maybe water with DE in a solution, pretty sure mites wont like that at all.
Hope this helps or springs up new ideas.