The American cockroach is probably the largest cockroach that infests dwellings and utilities. Adults are red-brown in colour with a pale yellow border around the pronotum. Egg cases are usually dropped or glued to surfaces within reasonable proximity to food and water. Up to 16 eggs hatch from each egg case, and the nymphs may take 6-12 months to develop into adults. Adult lifespan may be 6-12 months and females may produce up to 50 egg cases. As the American cockroach prefers warm, moist, dark conditions, it tends to live indoors in colder regions but mainly outdoors in warmer regions.
Partly because of its large size, it tends not (so often) to infest the dwelling parts of buildings (unlike the German cockroach). Nevertheless, it is a very widespread pest, occurring in wall, roof and subfloor voids and in and around sewers, drains, moist cellars, grease traps and rubbish dumps. Buildings infested or visited include hospitals, bakeries, food stores, warehouses,