This is the first time we've ever had bbs.
Right now, I'm living with my mother in a 2 room 1 bathroom basement (just for a short while.) All our furniture is at my brother's place, and I'm the only one with a mattress. My mother, however, has sort of like a wooden bed and she puts 2 blankets for cushioning.
We found bbs only in her room, never in mine, which is odd because I'm the one with the mattress (and don't bbs like mattresses?). Also, I don't think I don't have an allergic reaction to bbs because we recently dealt with fleas (their gone) and I have gotten a lot of bites from them.
So far, my mother found 1-2 bbs only on her pillow, not anywhere else. I clean her blankets (and mine just in case) every week and I dusted some diatomaceous earth in the corners and cracks where the wall and floor meets. I also flipped my mom's "bed" over to spray the bottom.
I also would like to add that after we sprayed and dusted and laundered everything, their gone for maybe 4-5 days (week max) and then their back again in pairs or one lonely bb crawls on the pillow.
I really need help finding out what's happening, and it would be wonderful not to have to ask my mom if she was itchy the night before.