Some of the dusts that are available to consumers, such as diatomaceous earth, can help in this regard. Pest controllers will put dusts in wall voids and other places where pesticide won't reach. What happens is the bugs will wander through the dust and pick up particles and be more vulnerable to desiccation after that exposure. But dusts will not solve the problem if deployed incorrectly, and if they are applied at too high a level they can cause breathing difficulties in some people.
Barriers: You can purchase bedbug-proof encasement covers for mattresses, box springs, and pillows. Also get bedbug interceptors to place under each leg of the bed or furniture items. These also allow you to see if there are any remaining bedbugs as they get trapped in the double rings of the interceptor disks. Ensure the bed is at least 6 inches from the wall and the bedding doesn't touch the floor.
Unlike those of other insects, bed bug bites may sometimes appear in tight lines of multiple, small, red marks where multiple bed bugs have fed along an exposed area. Bed bug bites can cause itchiness. Initially, a victim may detect a slight burning sensation. The burning area then develops red bumps, known as papules or wheals (rash). In extreme cases, bites may swell dramatically or turn into blister-like skin inflammations.