Cockroaches are adaptable, fast-breeding scavengers that will eat anything that humans do and quite a bit more including faecal matter and fermenting garbage. They are nocturnal at home in a dark, warm humid place including under the sink, in dishwashers, behind heating equipment, behind wallpaper, in kitchen cupboards and drawers, and in cracks and crevices.
Cockroaches can grow from a whopping 120mm to a tiny 10 mm. In Australia, we have around 400 cockroach species although only about 6 are considered household pests. These include: