Don't count on dryer sheets for mite control.
Their entire life cycle happens above ground.

They avoid the sheets.
But, outdoors, they will still infest upper branches.

I have none in my veg room.
Probably due to the concentration of the scent.
I imagine the li'l buggers stop at the air vent an' say Feh! Smells like sheet in dere!

I jus' stick da outside gals into my shower stall with a fresh Nopest strip for a couple hours.
Then wait 2 days and repeat, to kill the new hatch.
Then again in 2 days to catch any stragglers.
In between, I store the NPS in a zip baggie to keep it fresh.
Works a treat.

Just leaving a Nopest strip in the grow room 24/7 is not advised.
That will create resistant strains of mites at the perimeter.
Then we are all screwed, yah?
Aloha, Y'all

Weeze