Due to modern heating, cockroaches can be found in most parts of the country. Cockroaches are survivors. Over millions of years, they have not needed to evolve very much. All roaches have wings, but few fly. Cockroach infestations have a strong, awful scent. Roaches can survive on almost anything (any human food, other insects, glue, fat, wood, even dirt). The two most common types of roaches found in or around homes are American and German.