How long does it take for German cockroach eggs to hatch?

The correct duration for German cockroach eggs to hatch is 28 days. After a female German cockroach lays an egg case, which can contain around 30 to 40 eggs, it takes about four weeks for the eggs to develop and hatch into nymphs. The environmental conditions, such as temperature and humidity, can influence this timeframe, but generally, it remains close to 28 days under optimal conditions. Awareness of the hatching period is crucial for effective pest control strategies, as it helps in timing interventions to break the cockroach life cycle and reduce their populations effectively.