What would be an indication of a cockroach infestation in an area?

The presence of cast skins and egg cases is a strong indication of a cockroach infestation. As cockroaches grow, they molt, shedding their exoskeletons multiple times. These cast skins are often found in the areas where they inhabit, such as behind appliances, under sinks, or in cabinets. Additionally, cockroaches lay egg cases, known as oothecae, which can contain multiple eggs inside. Finding these egg cases in an area signifies not only an infestation but also the potential for further population growth if not addressed. Hence, their presence is a key physical sign that infestations are occurring, which prompts the need for pest control measures to eliminate them effectively.