The Oriental cockroach feeds on all kinds of food, especially decaying organic matter and starchy foods. This species of cockroach can survive outdoors in freezing temperatures for long periods of time.
Outside, Oriental cockroaches are often found in sewers and under debris, leaves, stones and firewood. They will enter structures through door thresholds, under sliding glass doors, along utility pipes and through floor drains. Once indoors, Oriental cockroaches find harborage in basements and crawl spaces.
Cockroaches like Oriental roaches have been reported to spread at least 33 kinds of bacteria, six kinds of parasitic worms and at least seven other kinds of human pathogens. Oriental cockroaches’ habit of feeding on filth means that they are likely to pick up germs on the spines of their legs and bodies as they crawl through decaying matter or sewage and then carry these into food or onto food surfaces.