Oriental Cockroaches
Blatta orientalis
Oriental Cockroach Identification
Pest Stats
Color
Shiny black
Legs
6
Shape
Oval
Size
1" long
Antennae
Yes
Region
Northern regions of the United States
What Do Oriental Cockroaches Look Like?
Oriental cockroaches exhibit a shiny black to a dark reddish-brown color. As adults, the male and female cockroaches, though both large in size, are quite different in appearance. Growing to only 25 mm in length, the smaller males have shortened, three-quarter-length wings. As a result, the last few abdominal segments of their bodies are exposed. In comparison, female oriental roaches reach a length of 32 mm and have no wings. Instead, they have large wing pads that shelter the first few segments of their bodies. While differing in appearance, neither males nor females can fly.
Signs of an Oriental Cockroach Infestation
There are three telltale signs of an oriental cockroach infestation: sightings, egg capsules and odor.
- Sightings: Especially during the warmer months of the year, oriental cockroaches may be seen outside near moist gutters, around landscaping beds, and coming in and out of sewers and storm drains during the night. During the day, Oriental cockroaches congregate in dark, moist and undisturbed spaces.
- Egg Capsules: Aside from sightings of the cockroaches themselves, egg cases ranging in size from 8 to 10 mm in length will appear during an infestation. Oriental cockroach egg cases are usually dark brown or reddish in color. Each egg case can hold about 16 eggs.
- Odor: Smells will also alert a homeowner to an Oriental cockroach infestation. Oriental cockroaches secrete chemicals to communicate with each other. The chemicals have a notorious musty odor.
Oriental Cockroach Prevention
The best advice for Oriental cockroach control is to practice good sanitation. To prevent oriental cockroaches from infesting a home, vacuum often and keep a spotless kitchen. Consider using a dehumidifier to prevent moisture buildup. On the exterior of the home, seal all possible entry points with a silicone-based caulk, paying close attention to cracks around doors, windows, pipes and utility lines. Additionally, fortify all entrances around utility pipes and ventilate crawl spaces to prevent moisture buildup. Since oriental cockroaches are very dependent on water, eliminate sources of standing water and divert water away from the home’s foundation with properly functioning downspouts, gutters and splash blocks.
How to Get Rid of Oriental Cockroaches
Wondering how to properly get rid of oriental cockroaches? If you suspect an oriental cockroach infestation in your home, contact a licensed pest control professional to conduct an interior and exterior inspection and work with you to develop an oriental cockroach treatment plan. A pest control professional may inquire about any water build up or particularly damp areas of the household that could attract and sustain oriental cockroach populations. They will also likely check for any deposits of garbage or old food.
Oriental Cockroach Education
Habitat
Primarily an outdoor species, oriental cockroaches are often found in sewers and under debris, leaves, stones and firewood. Additionally, these pests can also live in the voids or openings beneath porches. While their natural habitat is outdoors, oriental cockroaches tend to invade homes during the summer. 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, as they prefer damp, cool locations. Furthermore, these cockroaches will usually crawl around toilets, sinks, pipes and service ducts.
Habits
The oriental cockroach feeds on all kinds of food, especially decaying organic matter, starchy foods and garbage. Though these cockroaches have been noted to survive for up to a month without food, they cannot live for more than two weeks without water. Heavily dependent on water, they tend to gather in large numbers near water sources.
Pest Predictions: Experts Explain Why Pest Populations Are Rising This Fall & Winter
The National Pest Management Association (NPMA) released its bi-annual Bug Barometer®, a forecast to show Americans what they can expect from pest populations in their respective regions across the U.S. this fall and winter.
Attention Allergy Sufferers: Pests May Be Triggering Your Asthma & Allergy Symptoms
Spring is a peak season for allergies and asthma. Learn how to stay protected from pests that may be triggering your symptoms.
Experts Warn of Increased Pest Activity This Fall as Result of Long, Wet Summer
NPMA has released its bi-annual Bug Barometer® forecast, a seasonal projection of the pest pressure and activity Americans can expect to see in their respective regions of the country based on weather patterns, long-term forecasts and pest biological behaviors. Find out what pests you can expect to see in your region.
Soggy Spring and Mild Summer Create Perfect Conditions for Pests to Thrive
The National Pest Management Association just released its summer Vector Sectors™ list of the top 10 U.S. cities with the greatest risk for increased pest pressure from vector pests for the remainder of summer and into fall. Did your city make the list?
Pests Could Be Triggering Your Seasonal Allergy Symptoms
Experts at the National Pest Management Association are highlighting how certain pests can exacerbate seasonal allergies and asthma symptoms during Allergy and Asthma Awareness Month.
Rainy Spring and Summer Will Do More Than Dampen Outdoor Plans
The NPMA today released its bi-annual Bug Barometer® forecast. According to the group’s team of entomologists, warm and wet spring and summer conditions predicted for much of the U.S. will contribute to spikes in pest populations nationwide.