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July 30, 2026Short & citedBlog
Civic Viewpoint.
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Field Notes • Insects

Cockroach

Cockroaches are a group of insects in the order Blattodea, known for their flattened bodies, long antennae, and ability to live in a wide range of environments.

Updated July 30, 20261 min readCited sources

Cockroaches are insects in the order Blattodea, known for their flattened bodies and long antennae. Most species live outdoors, but a few common ones can become household pests in Canada.

What it is

Cockroaches are omnivorous scavengers that eat a wide range of organic material, including food scraps, grease, and decaying matter. They have a life cycle of egg, nymph, and adult, and are mostly nocturnal.

Why it matters

In Canadian homes and apartments, especially multi-unit buildings, cockroaches can contaminate food and trigger allergies. They enter seeking food, water, warmth, and shelter, often hiding in cracks and behind appliances.

Key details

Control focuses on sanitation: removing food and water sources, sealing entry points, and reducing hiding places. Lifespan varies by species, but some can survive weeks without food if water is available.

In short

  • Cockroaches are scavengers that eat many organic materials.
  • They enter homes for food, water, and shelter.
  • Control involves cleaning, sealing, and reducing clutter.
  • Some species can trigger allergies and contaminate food.
Canadian angle

Cockroaches are a common indoor pest in Canadian homes and apartments, especially in multi-unit buildings and warm, humid areas where food, water, and shelter are available.

Quick questions

What do cockroaches eat?
They eat crumbs, grease, starches, meats, plant matter, and even cardboard or glue.
How to get rid of cockroaches?
Remove food and water, clean spills, seal cracks, reduce clutter, and use traps or professional pest control.
Are cockroaches dangerous?
They are not typically aggressive but can contaminate food and are linked to allergic reactions.

Sources

  1. EarthKindhttps://www.earthkind.com/blogs/blogs/what-do-cockroaches-eat
    Supports: Cockroach diet, attraction to homes, prevention measures.
  2. Orkinhttps://www.orkin.com/pests/cockroaches/cockroach-food
    Supports: Cockroach diet, indoor hiding places, survival without food and water.
  3. Raidhttps://www.raid.com/en-us/education/bug-basics/what-do-cockroaches-eat
    Supports: Omnivorous diet, common foods, survival without food and water.
  4. PestWorld for Kidshttps://www.pestworldforkids.org/pest-info/bug-articles-by-type/what-do-cockroaches-eat/
    Supports: Diet, favorite foods, attraction to kitchens, survival without food and water.
  5. Wikipediahttps://www.wikipedia.org/wiki/Cockroach
    Supports: General statement that cockroaches can passively transport microbes and are linked with allergic reactions.