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american cockroach on piece of food


American cockroaches originated in central Africa and have since spread around the world via man-made vessels such as ships, automobiles and airplanes. These cockroaches can be found inhabiting sewer systems, boiler rooms, steam tunnels, basements and even attics in flat top roofs. Anytime a pest professional hears the phrase "those roaches were big enough to ride", they immediately know which cockroach species is present.

Biology and Behavior

american roach on wood

  • These cockroaches are large and reddish-brown, ranging from 1 3/8 to 2 1/8 of an inch long.

  • They can travel long distances to food or harborage (living) sources (>300feet).

  • Females glue egg capsules to surfaces; egg capsules contain 14-16 eggs per capsule.

  • Females produce 250 to 300 offspring in a lifetime.

  • They are rather long-lived, typically living longer than one year.

  • They feed on most foods but prefer fermenting foods, including beer.

  • American cockroaches occasionally migrate en masse from sewers, landfills and other harborage areas.

American Cockroach Prevention Tips

  • Remove food and moisture sources (i.e., roof leaks, food spills).

  • Keep floor drains filled with water or cover drain openings with fine mesh screen.

  • Seal cracks greater than 1/4 inch in floors, walls and ceilings with a sealant.

  • Fill window and door frame gaps and utility openings with a sealant.

  • Keep shrubs, vines and tree limbs trimmed away from the structure.

  • Mulch should be less than 3 inches deep; gravel perimeters are best around a structure.

  • Remove garbage daily and store containers outside with tight fitting lids.

  • Remove leaf litter and yard wastes from a foundation.

  • Don't stack lumber, firewood, bricks or other debris next to a foundation.

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