How can I get rid of these insects?
Focus on locating the source of infestation. Bed bugs are commonly found in bedrooms or other sleeping areas because they are most active at night. During the day, they hide in tight cracks or crevices, for example behind baseboards, pictures, light switch plates, clocks, or loose wallpaper. Hiding places are usually evident by black or brown spots (dried excrement) that stain surfaces on which they rest. Bedding from infested rooms should be washed in hot water. Infested furniture can be set outside during cold weather (2 days at 0 F; 4-5 days at 20 F). Vacuum lint, dust, or other matter from the mattress, cover, and box spring to eliminate hiding places.
Apply a residual insecticide, such as cyfluthrin, deltamethrin, or permethrin to all cracks, crevices, and other areas where bugs may hide. Also treat springs, slats, frames, mattresses, furniture, walls, baseboards, and behind loose wallpaper with an insecticide. Remember to read insecticide labels before buying and applying so they are used properly. Bed bugs can be a challenging pest to eradicate for the homeowner because they are able to hide in so many tight places. Consider hiring a professional pest control operator if you are unable to control them yourself, or if you wish to hire a professional from the beginning.