American Cockroach (droppings/frass)

In dark, moist areas of human structures such as basements, crawl spaces, and around plumbing; also common in sewers and steam tunnels.

Opportunistic omnivore that eats decaying organic matter, garbage, food crumbs, and starchy materials like book bindings and wallpaper paste.

Primarily nocturnal insects that prefer warm, damp environments; they are active runners and can fly short distances in high temperatures.

Risks: Can transmit pathogens and bacteria (like Salmonella), contaminate food surfaces, and their droppings/shed skin can trigger asthma and allergies in humans. Benefits: Serve as decomposers in natural outdoor ecosystems.