It is nocturnal, hides in the smallest of cracks and crevasses. It does reproduce at a rate that makes it hard to control. Cockroaches have wings but they do not fly nor do they live outdoors in this part of the continent. This means that they are brought into the building, maybe with equipment or supplies when someone moves in. They are here to stay unless we take drastic measures.
Cockroaches are insects that tend to hide and live in the hiding places filled with dirt.
From there they and other insects spread this filth. Insects also carry diseases and can cause Salmonella food poisoning. They spread Mononucleosis and a host of other less well known illnesses. They may also cause allergic reactions to sensitive people. Cockroach allergies are far more common than most people realize.