- Adults are about 1.5” – 2.5” long.
- Are reddish brown and have a yellowish margin on the body behind the head.
- When disturbed, may run rapidly – adults may fly. Nymphs (immature) cockroaches resemble adults, but without wings.
- Generally live in moist areas, but can live in dry areas if they have access to water. Prefer temperatures around 84°F and do not tolerate cold temperatures.
- Live in basements and sewers in residential areas and move outdoors when weather gets warm.
- Common in basements, crawl spaces, cracks and crevices of porches, foundations, and walkways adjacent to buildings.
- Feed on a wide variety of plant and animal material
- Nymphs (immature) cockroaches emerge from egg cases in 6-8 weeks and require 6-12 months to mature.
- Nymphs molt about 13 times before reaching maturity.
- Adults can live up to one year, during which females produce an average of 150 young.
- May enter houses via sewer connections, under doors, around utility pipes, air ducts, or other openings in the foundation.
- Are the largest of the common roaches.
- Egg cases contain approximately 14 eggs. 12-24 cases can be produces in June, July, and August.
- Can coexist with German Cockroaches.
- Very aggressive and strong fliers.
- Will eat almost anything, but prefer fermenting foods.
- Egg case contains 13-18 eggs and is in inconspicuous places in the habitat such as on furniture, cabinets, behind picture frames, walls and ceilings.
- Egg cases hatch in about 50 days.
- Females live about 6 months and can deposit as many as 14 egg cases.
- Nymphs molt 6-8 times in a 5-6 month timespan before becoming adults.
- Males readily fly when disturbed.
- Single female can produce about 250 offspring in her lifetime.
- Prefer high temperature areas.
- Can survive in drier locations than German Cockroaches.
- Frequently occur in locations at eye-level or above, such as in cabinets, around closet shelves, behind pictures, in warm areas near motors of refrigerators, electric clocks, timers and television sets. Also around braces of chairs and tables, around objects on walls, and in shower stalls.
- Female produces egg case containing 30-40 eggs.
- Eggs hatch in about 3 weeks.
- Nymphs (immature) cockroaches grow fast and molt 6 or 7 times in about 60-100 days.
- Female produces 4-8 egg cases in her lifetime. That means there can be over 300 offspring from a single female.
- Gather in dark places that have high humidity, contain paper, wood, and other porous surfaces and have food readily available.
- Gather in cracks and crevices around cabinets, wall and ceiling voids, in and around refrigerators, dishwashers, stoves, washers and dryers, and water heaters.
- Most favor humidity levels that are found in kitchens and bathrooms under and around toilets, bathtubs, showers, and sinks.
- Adults are about ½ – 5/8 inches long. Color varies from light brown to tan, except for two dark streaks on the shield like segment behind the head.
- Active at night.
- Will feed on all types of human food, pet food, soap, glue, etc.
Oriental Cockroaches (Waterbugs)
The “water bug” or Oriental cockroach is more closely associated with cooler, damp areas than most other common cockroaches. These insects mostly feed upon decaying organic matter. They are found in damp basements, cellars, crawl spaces, near drains, leaky pipes and beneath refrigerators, sinks and washing machines, under floors and inside walls. They usually are seen walking around the first floor of buildings. Outdoors, they can be found beneath decomposing leaves or within mulch beds. At different times of the year (usually spring or fall), there can be a mass migration of Oriental cockroaches into buildings, but because of their preference for cooler temperatures, they can also commonly be found outdoors and in unheated buildings during the winter.
Adult Oriental cockroaches are very large, shiny and black. Females are about 1 ¼ inches long, broad and have little non-functional pads for wings. Males are about one inch long, more slender and have non-functional short wings running the length of the abdomen. Juvenile cockroaches (the nymphs) are darker in color than adults, similarly shaped and wingless. Egg cases are dark reddish-brown, one inch long (largest of the common cockroaches), and look like a ladies small handbag.
These cockroaches are most common during the late spring and early summer. They are more sluggish than other common cockroaches, develop in damp basements and sewers and forage mostly at or below ground level in structures. You will not usually find them in cupboards, on walls or in the upper floors. They occur outside during warm weather and, during cool periods, may migrate in mass indoors. They have a preference for high-moisture conditions. They can live without food for a month if water is present, but die in two weeks without water.
Oriental cockroaches can move into a building, entering through cracks in foundations, around loose fitting doors or windows and along water and gas pipes. Homeowners can help themselves by repairing leaky water faucets and pipes, sealing openings such as cracks in foundation walls and exterior walls around air conditioners, doors, windows, floors, ceilings, around plumbing fixtures, electrical outlets, baseboards, etc. with putty, plastic wood and other caulking material.
Sanitation is also of paramount importance in cockroach control. Clean areas beneath cabinets, sinks, stoves, refrigerators, etc. as well as cupboards, pantry shelves and food storage bins. Make sure to clean up spilled foods and liquids.
If a severe cockroach infestation develops or if you are in doubt about how to treat your occasional invaders, call us. We have the skills and materials to handle the job.