Bed bugs feed on human blood by piercing the skin with their beak. They are found in the tufts and seams of beds as well as in cracks of the floor and under carpet. Bed bugs usually feed only at night or when light is very dim. Homes become infested with beg bugs through second-hand articles and old furniture. They migrate between homes along plumbing pipes and wires.

Information from Penn State Department of Entomology