Cockroaches
American Cockroach
The largest common cockroach — reddish-brown and able to glide short distances. Usually tied to drains, sewers and warm, damp commercial spaces.
Quick facts
- Size
- 3.5–5 cm
- Colour
- Reddish-brown with a pale band behind the head
- Active season
- Year-round indoors
- Where found
- Basements, drains, boiler rooms, commercial kitchens
How to Identify
- Large, reddish-brown cockroach
- Pale yellowish band around the shield behind the head
- Full wings; can glide short distances
Signs to Look For
- Large cockroaches near drains or in basements
- Droppings about the size of a grain of rice
- Dark, purse-shaped egg cases near hiding spots
- A musty odour in heavy infestations
Why It Matters
- Spread bacteria such as salmonella onto food and surfaces
- Droppings and shed skins can trigger allergies and asthma
- A serious issue for food businesses and health inspections
Prevention Tips
- Keep floor drains covered and seal gaps around pipes
- Reduce moisture and fix leaks
- Store food sealed and keep garbage closed
More Cockroaches
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Brown-Banded Cockroach
A small cockroach with two light bands across its body.
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German Cockroach
The most common indoor cockroach in Ontario apartments, restaurants and kitchens.
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Oriental Cockroach
A dark, shiny cockroach that thrives in cool, damp places like basements, crawl spaces and floor drains.
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