my rooms are inside of a dirt floor barn. all of my farm equip is stored in there year round. tractor, lawn mowers, weed whips, brush hog, straw bales for chickens, all my used composting/new dirt, fresh fertilizer bags, mixing trays for soil, and its warm all year long from the ac that exhausts into it. I dont change my shoes, my dogs run freely in my room sometimes, my grow room door is open to the dirt floor barn area when I'm inside of the rooms and light is on 24/7 and 12 hours a night in the other, I can see it poke through the ac unit, a couple cracks too. I've got snakes, spiders, sometimes gnats couple times aphids for ten minutes....never seen a mite or a mite web. my visual inspection is daily with a 1600x digital lcd microscope, can see the fluids moving in a fly's leg with this thing.
I contend mites come from clones, house plants, and buddies with mites.
