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Insect Pests

German Cockroaches (Blatella germanica)

Characteristics: brown to black color, size 1.25cm in length
Behaviour:  The German cockroach is the most prolific breeder among all cockroaches. Female carry the egg capsule than may contain from 30-48, and can produce from 4-8 capsules in their lifespan. There are 6-7 nymphal stages and their development requires 6 to 12 weeks. An adult can live up to one year. Like all cockroaches, These insects are particularly associated with restaurants, food processing facilities, hotels, kitchens, washrooms and nursing homes, as close as possible to food and water sources.

American Cockroach (perilaneta americana)

Characteristics: Reddish brown color, size 5cm in length
Behaviour:  The American cockroach is the largest of the common species. Females carry the egg capsule than may contain from 15-20 eggs, and can produce 15-90 capsules in their lifetime. There are 9-13 nymphal stages and their development requires 6 month to 2.5 years. An adult can live up to 1.5 year. Like all cockroaches, it is general feeder. American cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer warm temperatures around 29 °C. we  can found it in bathrooms and kitchens but mostly in warm and damp environment such as sewers, basement and crawl spaces.

Limit Access
Take the following measures if observation or trapping shows roaches are migrating into a building from outdoors or other areas of the building:
Seal cracks and other openings to the outside.
Use weather stripping on doors and windows.
Look for other methods of entry, such as from items being brought into the building, especially appliances, furniture, and items that were recently in storage. Inspect food deliveries before putting them in kitchens.
Look for egg cases (oothecae) glued to undersides of furniture, in refrigerator and other appliance motors, boxes, and other items. Remove and destroy any that you find.
Locate and seal cracks inside the treatment area where cockroaches can hide.
Trim shrubbery around buildings to increase light and air circulation, especially near vents, and eliminate ivy or other dense ground covers near the house, as these may harbor cockroaches.
From around the outside of buildings remove trash and stored items such as stacks of lumber or firewood that provide hiding places for cockroaches.
Consider keeping a layer of gravel about 6 to 12 inches wide around the perimeter of buildings.

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