Oriental Cockroach

What do Oriental cockroaches look like?

  • They are reddish-brown to black.
  • Males are 1inch long and females are 1 1/4 inches long.
  • The male’s wings cover 75% of the abdomen and the female’s wings are reduced to small wing pads.
  • The egg capsule (i.e., ootheca) is dark reddish-brown (and becomes black with age), 3/8-inch long, and typically has eight eggs per side.

What are the habits of Oriental cockroaches?

  • Females can produce an average of eight egg capsules each of which contains 16 eggs.
  • Egg capsules are dropped or, using secretions from their mouths, glued in protected locations such as crevices near food sources, where they remain until hatching.
  • Developmental time (egg to adult): is 206 to 800 days depending on temperature.
  • Females may live 34 to 181 days while males typically live 112 to 160 days.
  • They are abundant in sewers and commercial facilities, e.g., groceries, restaurants, hospitals, and office and apartment buildings.
  • While Indoors, they prefer damp, secluded places, e.g., crawlspaces, basements, water meter boxes, and drains.
  • Often found in bathtubs and sinks because, lacking the small pads on their tarsi (i.e., last segments of the legs) which are commonly found on other cockroaches, they are unable to crawl up smooth surfaces. Outdoors, even in cold weather, they are found in planters, ground covers, underside of stones, leaf litter, and other debris.
  •  They typically feed on decaying organic matter but prefer starchy foods.

What kind of damage is caused by Oriental cockroaches?

  • Like German and American cockroaches, Oriental cockroaches are potential mechanical transmitters of many bacterial, fungal, viral and protozoan diseases primarily through contamination of food preparation surfaces.
  • Their body parts, excretions and other secretions can cause allergies, asthma and hypersensitivity reactions–particularly in children.

What should I look for? 

  • Oriental cockroaches leave fecal deposits and brown secretory deposits.
  • They have a strong, foul, musk odor indicative of large populations.
  • Potentially infested products may be a mode of introduction. 

How do I control and kill Oriental cockroaches?

  • Cardboard and plastic sticky traps can be used to pinpoint sources of cockroach infestation and to monitor areas of suspected infestation.
  • Visual inspections should be conducted using a flashlight.
  • Sources of food, water and harborage essential for their survival should be eliminated.
  • Clutter should be minimized because large cockroaches like to hide in stacked boxes, cartons, rolled carpeting and stored paper and cardboard materials, especially in dark, damp locations.
  • Vacuum cleaning can be used to physically remove exposed cockroaches and allow for easier monitoring of cockroaches.
  • Moisture sources should be eliminated by repairing leaks, improving drainage, and installing screened vents in order to increase airflow.
  • Doors weeps should be used to prevent access from underneath doors.
  • Caulk and other sealants should be used to eliminate harborage and prevent entry into structures, e.g., especially eliminate cracks where fixtures are mounted to the wall and/or floor; around all types of plumbing, baseboard molding and cracks on or near food preparation surfaces. Cockroach access routes from wall voids into occupied spaces should be sealed with caulk or grout, especially around plumbing and electrical fixtures.
  • Basement floor drains should be maintained by ensuring the traps are wet (a few drops of mineral oil can be applied to slow the evaporation process).  
  • Drains can be protected with screens or basket inserts and cleaned regularly.
  • The use of granular or liquid insecticides can be used to treat American cockroaches.

Innotech Pest Management serves the greater Palm Coast, St. Augustine and Jacksonville Florida regions.  Click to schedule an appointment if you need assistance with eliminating Oriental cockroaches.