Bed bugs are small wingless insects that feed on the blood of warm-blooded animals, like humans. When they hatch, they are about the size of a poppy seed. Adult bed bugs grow to about ¼ of an inch long. They can be almost white just after molting. Then they are tan, deep brown, or burnt orange. After feeding they may have a dark red or black mass in the center of their body. When disturbed they seek shelter in dark crevices or cracks.
Bed bugs like warmth. Bed bugs are most active in the middle of the night when people are sleeping. But they may come out during the day if they are hungry.
Bed bugs tend to stay within 7 feet of their food source. They can live for several months without eating, and they also move in search of food. Bed bugs are very good "hitchhikers." They can attach themselves to clothing and shoes, hide in furniture, suitcases, and moving boxes, to travel where they can find their next meal. This is how bed bugs can be transported to places like movie theaters, clothing stores, and apartment buildings.