Diatomaceous earth!! Wrap your mattresses/furniture in industrial plastic with diatomaceous earth inside, but diatomaceous earth under the mattress and in every crevice of your bed frame. make a thick line of it around the corner of the whole room, but isopropyl alcohol in a spray bottle, and spray the walls. Wash ally his clothes.
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My fiance and I got a new bed a couple of years back. We found out it had bugs, not sure if they came from the warehouse or it came from or one of us. We didn’t know for months, we kept waking up with bites and thought there was a mosquito in the room.