When it's above 40F I can leave it outside in the sun, otherwise it goes inside. I haven't rebuilt my main grow light yet, so I need to do that this weekend. Also, I've been bringing it into my garage for weeks at night now....and I have no mite problems. The garage has multiple direct openings to the attic. No mites spotted, just a couple of spiders which is expected.
Actually I have 2 spiders living in my shower. One is tiny and I'd never get rid of him. He's so cute. The other is a small web weaver that will go ceiling to floor while I am showering. I just kind of enjoy watching him/her because they make interesting decisions once I turn the water on.
oh and those are the only 2 spiders I have seen recently. I had my bug guy spray inside in the spring for spiders and these two are the first to show up. No idea why they both chose the bathroom, I haven't seen a bug at all, so they're probably just eating each other.