Less Toxic Home & Garden Although cockroaches are useful outdoors, where they help recycle plant and animal wastes, they are not welcome indoors. Research clearly indicates that roaches can carry disease-causing organisms from sewers, garbage cans, or bathrooms to kitchen counters and human food. Cockroaches can also trigger allergic reactions in some people.
Penn State Fact Sheet
American Cockroaches Cockroaches are among the most common of insects. Fossil evidence indicates that cockroaches have been on earth for over 300 million years. They are considered one of the most successful groups of animals.
Brown-Banded Cockroaches Brownbanded cockroaches prefer warm and dry locations, such as near refrigerator motor housings, on the upper walls of cabinets, and inside pantries, closets, dressers, and furniture in general.
German Cockroaches The German cockroach is a widely distributed urban pest. It is also the most common cockroach species in houses, apartments, restaurants, hotels, and other institutions. This is true not only in Pennsylvania but also throughout the United States and in most parts of the civilized world.
Oriental Cockroaches Oriental cockroaches are often called water bugs because of their preference for dark, damp, and cool areas such as those under sinks and washing machines, and in damp basements.
Pennsylvania Wood Cockroaches The Pennsylvania wood cockroach is considered an occasional nuisance pest in homes in Pennsylvania. It is widely distributed in the eastern, southern, and midwestern states, up to Canada.
Ohio State Fact Sheet
American Cockroach The American cockroach is the largest of the house-infesting roaches. They are most commonly found in restaurants, grocery stores, bakeries, breweries, pet shops and other establishments where food is prepared or stored.
Brownbanded Cockroaches The brownbanded cockroach is more gregarious and more likely to be found in homes, hotels or apartments rather than commercial stores, restaurants or kitchens.
Virginia Tech Fact Sheet
American Cockroaches American cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer warm temperatures around 84 degrees Fahrenheit and do not tolerate cold temperatures.
Brown-Banded Cochroaches They prefer to hide in warm, elevated areas near the ceiling, behind wall decorations and loose wallpaper, in closets, beneath or inside upholstered furniture, and in electrical appliances such as TV sets, stereos, radios, and toasters. They develop and live throughout the building, making control difficult.
German Cockroaches They can develop into large populations and live throughout the house, especially in the kitchen and bathroom. During the day, these roaches may be found hiding clustered behind baseboard molding, in cracks around cabinets, closets or pantries, and in and under stoves, refrigerators and dishwashers.
Oriental Cockroaches Oriental cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer cooler temperatures around 75 degrees Fahrenheit and can overwinter in protected areas outdoors where temperatures average 40 to
45 degrees Fahrenheit.