Bed bugs are parasitic insects of the cimicid family that feed exclusively on blood. Adult bed bugs are light brown to reddish-brown, flattened, oval-shaped and have no hind wings. Bed bugs are best known, as it prefers to feed on human blood. Bed bugs prefer habitat of warm houses and especially nearby or inside of beds and bedding or other sleep areas. Bed bugs are mainly active at night, but are not exclusively nocturnal. They usually feed on their hosts without being noticed. Bed bug bites may lead to a range of skin manifestations from no visible effects to prominent blisters. They often lodge in dark crevices, and the tiny adhesive eggs can be nestled by the hundreds in fabric seams. Common hiding places for bed bugs include seams in mattresses and box springs, cracks in bed frames, under loose wallpaper, behind picture frames, and inside furniture and upholstery. Bed bugs can survive without food for 80 to 140 days!