Cockroaches are not afraid of alcohol. Alcohol is not a threat to cockroaches, because it is easy to volatilize, and alcohol is not suitable for expelling or destroying cockroaches in life. In general, cockroaches are more afraid of the smell of onions and cucumbers.

Cockroaches are mainly distributed in tropical and subtropical regions and like to live near stoves and pools. At home, the kitchen is always the worst place for cockroaches.

Like other insects, the activity and reproduction of cockroaches are affected by temperature. In general, the seasonal fluctuation of cockroaches is the change of population or community number caused by temperature change. In winter, the temperature is low and there are few cockroaches.

The natural enemies of cockroaches are spiders, scorpions, centipedes, ants, toads, lizards and geckos.