Bed bugs exist in every state and on every continent except Antarctica. An estimated one in five Americans has dealt with a bed bug problem at one time or another.
These small creatures resemble apple seeds, as they are brown and oval shaped. They exist on a steady diet of mammal blood, and will feed on humans whenever possible. They feed on their victims at night, causing itchy and painful bites.
Bed bugs were almost completely eliminated following World War II, but in recent years they have come back with a vengeance.