Is there anything worse than a pest that strikes while you sleep? We don’t think so! If you’ve found yourself dealing with bedbugs (or fear you might), this guide will walk you through how to identify, eliminate, and prevent them—with confidence. What Are Bedbugs? Bedbugs are small, parasitic insects that feed on human (and sometimes pet) blood, typically while you sleep. The species most commonly found in homes is Cimex lectularius, also known as the common bed bug.