How to Identify Bed Bugs: Signs, Bites & What to Do

Bed bugs are one of the most dreaded household pests in Canada, and for good reason. These tiny, reddish-brown insects feed on human blood while you sleep, leaving behind itchy welts and a lot of stress. Whether you live in Montreal, Toronto, or Vancouver, bed bug infestations are on the rise across the country. Here is everything you need to know to identify them early and take action.

What Do Bed Bugs Look Like?

Adult bed bugs are about the size of an apple seed (4-5 mm long). They have flat, oval-shaped bodies that are reddish-brown in colour. After feeding, they become swollen and more reddish. Nymphs (young bed bugs) are smaller and nearly translucent, making them harder to spot. Bed bug eggs are tiny, white, and about the size of a pinhead.

Common Signs of a Bed Bug Infestation

Spotting bed bugs early can save you thousands of dollars in extermination costs. Look for these telltale signs:

Bite marks: Red, itchy welts on your skin, often in a line or cluster pattern. They typically appear on exposed areas like arms, shoulders, and neck.
Blood stains: Small reddish-brown spots on your sheets or pillowcases from crushed bugs.
Dark spots: Tiny dark faecal spots on mattress seams, bed frames, and nearby furniture.
Shed skins: As bed bugs grow, they shed their exoskeletons. Look for translucent shells near hiding spots.
Musty odour: A heavy infestation can produce a sweet, musty smell from the bugs' scent glands.

Where Do Bed Bugs Hide?

Bed bugs are nocturnal and excellent at hiding. Check these common locations:

Mattress seams, piping, and tags
Box spring and bed frame joints
Behind headboards attached to walls
In cracks of nightstands and dressers
Behind wallpaper and in electrical outlets
Inside luggage and clothing after travel

How Do Bed Bugs Spread?

Contrary to popular belief, bed bugs are not attracted to dirty homes. They spread primarily through travel and used furniture. Hotels, public transit, movie theatres, and second-hand items are common sources. In Canadian apartment buildings, they can migrate between units through walls and plumbing.

What to Do If You Find Bed Bugs

If you suspect a bed bug infestation, act quickly:

Confirm the identification: Use our AI pest identification tool to upload a photo and get instant confirmation.
Do not panic or move furniture: Moving infested items can spread bugs to other rooms.
Wash bedding: Launder all sheets, pillowcases, and clothing in hot water (60°C) and dry on high heat for at least 30 minutes.
Call a professional: Bed bug treatment in Canada typically costs between $500 and $2,000 depending on the severity. Professional heat treatment or chemical treatment is usually required.

Prevention Tips for Canadians

Protect your home by inspecting hotel rooms when travelling, checking second-hand furniture before bringing it inside, using mattress encasements, and reducing clutter around beds. When returning from trips, inspect your luggage in the bathtub before unpacking.

Early detection is the key to avoiding a costly infestation. If you think you have bed bugs, upload a photo to our pest identification tool for instant AI-powered identification and get connected with a verified local exterminator.