Question: August 2005 I returned from an overnight visit at a rustic
camp,having been bitten throughout the night in my bed.  About 7-10 days
later I noticed more of the same at home.  Invisible somethings biting me
in my bed, on my couch, in my chair.  Now I'm visiting family on holiday, and
they're biting me here too (I noticed them slightly at Thanksgiving). I'm
pretty sure that it's some kind of mite.  We have wood floors;
we've washed bed linens religiously.  I wear Skin-so-Soft lotion and Deep
Woods Off to bed at night to avoid some of the biting.  Can Orkin help
with this?  The company that we've been using has sprayed Nylar several times to no avail.
The fellow thinks that we need to get rid of our bed, couch, chair, and rug.
Mike

ANSWER   The only mite that could do this would be scabies mites, and I don't think you picked up these mites in that cabin.  

Your technician might try putting sticky traps under the couch and the bed. If something is there, he might catch a specimen. Try to remember if anything has changed that might have triggered an allergic reaction - laundry detergent, soap, shampoo, deodorant, etc. A Dermetologist might have some suggestions.