Ive had a couple of bouts with spider mites.The only thing that ended up working and the easiest was NoPest Strips ,$6 each .They last for four months,so youo can use them for three-four weeks and put in a ziploc for future use.They will work,but you have to seal the room up for them to work .I sealed mine for a day ,then left them in there for 4 weeks,no more mites.This last time I got them cause I had two clones outside, and brung them indoors.you can actually bring them in on your shoes from your yard.Shoes for the garden area is a good idea.They take like 2 weeks to hatch,so leave em in for at least that long.Ive been mite free since then.