I'm still itching..I remember when my girls had mites. Flipping itching here. I hate parasites and small critters that feed on things. Oh I hate tics..I work myself up when I see a tic.
Ok, life cycle is only 2 to 3 weeks. And they feed on chicken skin and feathers. They don't feed on humans. Though they might bite out of curiosity. The adults can lay eggs every day of the fertile stage before they die and that's why they spread.
Walmart sells them. Just bomb the ever loving crap out of your garage. Your garage doesn't go in your house right? I would also wash your clothes immediately when you mess with your garage or at least keep your clothes outside till you can wash them..