https://blog.jeken.com.tw/2020..../08/15/solenopsis-in
Once you've identified where cockroaches are entering, seal up cracks, gaps, and holes. Use caulk to seal cracks in walls and around windows, and install door sweeps to close any gaps under doors. Make sure your windows are tightly closed at night, as cockroaches are nocturnal and may find their way indoors during the evening. This step is crucial in preventing future infestations.