If spinosad kills them they can either stay or fall off. Spinosad destroys bugs from the inside out. Starts eating away thier digestiive trac. They might just slow down and die and still be on the leafs. Curious to know if Spinosad will kill them for you. Mites build up tolerance to any single one chemical, It's best to alternate two different types. If your growing inside and are pre flower the no pest strips work good.