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What Attracts Bed Bugs? The Real Science Behind Their Behaviour

18
Nov, 2025

Bed bugs are one of the most frustrating pests a homeowner or renter can encounter in Toronto and the Greater Toronto Area (GTA). They are tiny, and extremely persistent. Despite their small size, they can take over an entire home in a surprisingly short time. Many people assume that bed bugs are only found in dirty environments, but the truth is very different. Bed bugs are attracted to humans and the spaces we occupy. Understanding what draws them to your home is the key to preventing infestations and keeping your family safe from their bites.

Humans Are The Main Attraction

Bed bugs survive by feeding on blood, and humans are their favourite source. They are highly sensitive to the carbon dioxide we exhale. When we breathe, they can detect the carbon dioxide from several feet away and will move toward it. They are also attracted to body heat and natural scents from our skin. Sweat and other chemicals naturally produced by the body act as signals that lead bed bugs to their next meal.

This is why bed bugs often concentrate in beds, couches, and chairs where people spend extended periods of time. In Toronto apartments and homes in the GTA, it is common to find bed bugs clustering in areas where family members or roommates sleep, rest, or even watch television.

Routine and Habits Guide Bed Bugs

Bed bugs are highly intelligent when it comes to finding food. They are creatures of habit and learn where humans spend most of their time. For example, if someone regularly takes an afternoon nap on the couch, the bed bugs quickly learn that this spot provides a guaranteed blood meal (read our blog about this exact situation). They are not limited to feeding at night and will take advantage of any opportunity when a human is resting. This is one of the reasons infestations can become severe so quickly.

We have seen cases in Toronto where a single couch becomes the central hub for hundreds of bed bugs. Eggs, shed skins, and live bugs are often concentrated around the areas where the person’s head or body rests. This demonstrates how closely bed bugs track human behaviour and how quickly they can turn a comfortable spot into an infestation hotspot.

Clutter and Hiding Spots Make Homes More Vulnerable

While bed bugs are not attracted to dirt, clutter does make it easier for them to hide and thrive undetected. They love narrow crevices, folds, and small gaps in furniture, mattresses, and walls. In GTA homes, they are commonly found in mattress seams, box springs, couch cushions, bed frames, and even behind picture frames and electrical outlets. Closets and piles of clothing provide ideal hiding spaces that allow bed bugs to stay close to their food source while remaining out of sight.

Travel and Second Hand Items Can Introduce Bed Bugs

Toronto is a busy city, and the GTA sees a lot of movement of people and belongings. Bed bugs are excellent hitchhikers. They can attach themselves to luggage, backpacks, used furniture, or even clothing. Bringing second hand items into your home without careful inspection is one of the most common ways these pests spread. A single bed bug hiding in a suitcase or an old couch can quickly lead to a full-scale infestation in your home.

Prevention Tips for Toronto and GTA Residents

Knowing what attracts bed bugs is the first step toward preventing them. There are several practical strategies you can implement to reduce your risk. Keep sleeping areas clean and reduce clutter so there are fewer hiding spots. Inspect second hand furniture thoroughly before bringing it into your home. Use protective mattress encasements and pillow covers to make it harder for bed bugs to establish themselves. Be careful when traveling and inspect your luggage when returning home. At the first sign of bed bugs, it is always best to contact professional pest control services. Early intervention can prevent an infestation from taking over your home and spreading to vehicles, boats, and other spaces.

Bed bugs are small but highly persistent pests that can cause significant stress and discomfort. They are attracted to humans, follow routines, and take advantage of cluttered environments to hide and reproduce. In Toronto and the GTA, where people live in close quarters and move around frequently, bed bugs can spread quickly if not addressed promptly. By understanding their behaviour and taking proactive measures, homeowners and renters can protect their homes and families.

Pest Solution Services specializes in the detection, treatment, and elimination of bed bugs in Toronto and throughout the GTA. Professional intervention, combined with awareness and prevention, is the best way to ensure that bed bugs do not take over your home.

Pest Solution Services

Pest Solution Services