Yup. I got mites from visiting a friend's growhouse, even though when I got home I stripped nekkid in the hall before even entering my apartment, and left my clothes outside Guess I shoulda shaved my head too. But I also have ladybugs, and my little ecosystem is flourishing. The mites cause very very little damage since their numbers are kept in check by the army of scarlet hunters chomp chomp chomp! Plus the SMC prevents moisture loss at any damage sites.