Here's what I killed spider mites with when they come in
I went to drug store and got lice shampoo, if you can use it on kids why not plants 1 oz to 32 oz water , spray all and repete every 3 days for 1 and half week kills all kind of bugs
With in a few days of harvest I just use the small shop vac I have ,sucks webs and mites , you may have to hold your buds as you suck works for me .
When you are done with harvest, bomb then clean with bleach