How to Know If You Have Bed Bugs? The 7 Signs

Bed Bugs: A Silent Infestation

Bed bugs (Cimex lectularius) are a nightmare for Montreal residents. These nocturnal insects, the size of an apple seed, feed exclusively on human blood and are masters of hiding. Montreal consistently ranks among Canadian cities most affected by bed bug infestations, particularly in high-density rental neighborhoods.

Sign 1: Bites in Lines or Clusters

The first clue is often the bites. Unlike random mosquito bites, bed bug bites appear in lines of 3 to 5 bites (nicknamed "breakfast, lunch, dinner"). They occur on areas exposed during sleep and cause intense itching. Note: about 30% of people don't react to bed bug bites at all.

Sign 2: Blood Stains on Sheets

After feeding, engorged bed bugs can be crushed when you roll over, leaving small reddish-brown blood spots on your sheets and pillowcases. Check light-colored bedding regularly.

Sign 3: Black Fecal Spots

Bed bugs leave droppings that look like pinhead-sized black dots made of digested blood. They bleed into fabric like ink when dampened. Look for them on mattress seams, box springs, and nightstands.

Sign 4: Shed Skins and Empty Shells

Bed bugs go through 5 nymphal stages, shedding their exoskeleton at each stage. Finding these translucent to pale-brown shells indicates active reproduction.

Sign 5: A Sweet, Musty Odor

Heavy infestations produce a distinctive sweet, musty smell often compared to coriander. This comes from the bugs' scent glands and accumulated droppings.

Sign 6: Live or Dead Bugs

Adult bed bugs are 4-7 mm long, oval, flat, and reddish-brown. Inspect your bed at night (2-5 AM) with a flashlight. Check mattress seams, box spring folds, bed frame joints, and behind pictures or outlets.

Sign 7: Dark Trails on Walls and Furniture

Bed bugs leave dark streaks along their travel paths on walls, baseboards, and bed frames. These are fecal traces deposited during movement.

What to Do If You Spot These Signs

Act immediately. Do not move your mattress to another room. Wash bedding at 60 degrees Celsius minimum. Do not attempt DIY treatment with store-bought insecticides. Contact 514 Extermination for professional bed bug treatment. Visit our bed bug treatment service for fast, confidential assessment.