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Cockroach

Cockroaches are extremely resilient nocturnal insects. They reproduce quickly and can infest an entire building within weeks.

Cockroach

Identification sheet

Appearance
Flat oval insect with long antennae. The German cockroach (most common in Montreal) is light brown with two dark bands on the thorax.
Size
12 to 15 mm (German cockroach)
Color
Light to dark brown
Habitat
Kitchens, bathrooms, under sinks, behind appliances. Prefers warm, humid and dark places.
Lifespan
6 months to 1 year
Danger level
High

Health risks

Cockroaches spread bacteria (salmonella, E. coli), trigger asthma attacks and allergies. Their droppings and shed skins contaminate surfaces and food.

Signs of infestation

  • Insects scurrying away when lights are turned on at night
  • Small black droppings resembling ground pepper
  • Unpleasant musty odor
  • Brown egg capsules (oothecae) in corners
  • Brown stains on walls near hiding spots
  • Transparent shed skins

Prevention tips

  • Clean up crumbs and food residue immediately
  • Don't leave dirty dishes overnight
  • Fix water leaks and eliminate excess moisture
  • Seal cracks around pipes and outlets
  • Store food in airtight containers
  • Take out garbage regularly

Think you have cockroach?

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