Mechanical transmission of disease agents occurs when arthropods physically transport pathogens from one place or host to another via their body parts. A wide variety of arthropod pests may be involved in mechanical transmission of disease agents, including cockroaches, flies, ants, and beetles. For example, cockroaches, flies, and certain ants are covered with tiny hairs, spines, and setae on their bodies that may pick up contaminants as the insects feed on dead animals or excrement. When they subsequently walk on food, food preparation surfaces, or other sensitive areas, mechanical transmission of disease agents can occur. This non-biological mode of disease transmission is important in healthcare facility infection control policies and their implementation.