
SPIDER EXTERMINATOR - MONTREAL & SOUTH SHORE
About Spiders (Araneae)
Activity
Spiders are solitary and mostly nocturnal creatures that become active at night to hunt or trap their prey. They are drawn to quiet, undisturbed areas inside homes and buildings, especially where insects are abundant. Common places include basements, attics, closets, behind furniture, and near windows or vents. Spiders tend to remain hidden during the day, emerging after dark when their chances of catching food increase. Some species actively roam in search of prey, while others rely on webs built in strategic locations.
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Feeding Habits
Spiders are carnivorous and feed primarily on other insects. Their diet includes flies, mosquitoes, ants, and other small pests. They play a natural role in reducing indoor insect populations, but their presence is often unwanted. Web-building species trap prey in silk, while hunting spiders stalk and ambush their targets. Although they don’t damage food or surfaces like some pests, their webs, egg sacs, and sudden appearances can become a nuisance in homes and commercial properties.
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Size and Appearance
Spider sizes vary widely, from tiny house spiders that measure only a few millimeters to larger species with leg spans over several centimeters. Their bodies are divided into two main parts, with eight legs and multiple eyes. Colors range from light beige and gray to deep brown and black. Some species have distinct patterns or markings on their abdomens. While most indoor spiders are harmless, their sudden movements and unique appearance often cause fear or discomfort.
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Presence in Quebec
Spiders are commonly found throughout Quebec and especially in areas like Montreal, where both old and new buildings offer plenty of entry points and hiding places. Their numbers tend to rise in the late summer and early fall as outdoor temperatures drop, pushing them indoors. While they are not known to infest homes in the same way as other pests, consistent sightings may indicate favorable conditions for spiders to settle and reproduce.
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Indoor Behavior
Spiders choose secluded, low-traffic areas to spin their webs or take shelter. You may find them in corners, ceiling edges, basements, garages, utility rooms, and storage areas. They avoid human interaction and will quickly retreat when disturbed. Some species stay close to their webs, while others wander in search of prey. Their presence often signals an underlying insect problem, as they rely on other bugs for food.
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Outdoor Survival
Outdoors, spiders thrive in gardens, woodpiles, sheds, and around building foundations. They hide under rocks, inside cracks, or within leaf litter. In warmer seasons, they remain outside where insect activity is high. As the weather cools in Quebec, many migrate indoors for warmth and survival. While outdoor spiders play an essential role in the ecosystem, those that enter homes can create discomfort or fear, especially in large numbers.
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Reproduction and Web Building
Female spiders lay egg sacs that may contain dozens to hundreds of eggs, depending on the species. These sacs are often hidden in corners or attached to webs. Once hatched, young spiders disperse quickly in search of food and shelter. Web-building species construct new webs regularly, abandoning older ones as they relocate. This constant web production can lead to messy buildup in homes if left unchecked.
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Common Locations in Montreal
In Montreal, spiders are regularly found in residential buildings, storage units, garages, and areas with high insect traffic. Urban homes with lots of clutter or vegetation nearby are especially vulnerable. Commercial spaces such as warehouses, restaurants, and older offices may also attract spiders if pest control and maintenance are lacking.
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Difficult to Eliminate
Spiders are often underestimated when it comes to pest control. They are not drawn to bait and can be unaffected by traditional insecticide sprays aimed at crawling pests. Removing them requires a focus on reducing insect populations, sealing entry points, and regularly removing webs and hiding spots. Because of their elusive nature and the ease with which they return, professional treatment is often the most reliable way to keep spider problems under control.
Signs of a Spider Infestation
Spiders have a way of settling in without making their presence obvious. They build their webs in quiet, undisturbed corners and tend to stay out of sight during the day. Because they operate silently and typically alone, their presence can go undetected until their numbers begin to grow or their webs become visible.
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Unexpected Webs in Corners and Crevices
Finding fine, sticky webs behind furniture, in room corners, or tucked away in window frames usually means a spider has claimed that area. Even if you haven’t seen the spider itself, these webs often point to a hidden inhabitant close by. Some species create messy, irregular webs while others spin neat, symmetrical patterns.
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Spiders Appearing Near Light Sources or Windows
You might notice spiders hanging near lamps, window sills, or overhead lights. They often wait for flying insects to be drawn in, using the light as a hunting ground. Their positioning here is strategic, not random, and a sign they’ve established a feeding routine.
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Recurring Webs Even After Cleaning
If webs return shortly after being cleaned away, it likely means spiders are nesting nearby. Many species will rebuild quickly in the same location if they find it ideal for hunting or hiding. A repeating pattern of new webs usually signals that spiders are living within walls, ceilings, or baseboards.
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Movement Along Ceilings, Corners, and Baseboards
Though spiders stay still for much of the day, they’re often active at night. You might glimpse them crawling along the ceiling or hugging baseboards as they look for prey. These quiet movements indicate they are well adapted to the indoor environment.
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Hidden in Storage Areas or Behind Appliances
Spiders prefer spots that are calm and dark. They can be found in basement storage boxes, behind refrigerators, inside laundry rooms, or tucked beneath rarely moved items. These places provide warmth, shelter, and protection from frequent disturbance.
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Webs Found in Basements, Kitchens, Bathrooms, and Utility Rooms
Moisture and insect activity attract spiders. Kitchens, bathrooms, and utility rooms often provide both. If webs begin appearing around pipes, near sinks, or close to pantry shelves, it may mean spiders are using these high-traffic zones for feeding.
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Unusual Sightings in Bedrooms or Workspaces
While spiders often begin in low-traffic areas, their presence in sleeping or working spaces may indicate their population has grown or spread. Seeing them in places where they usually aren’t expected is a sign their reach has extended across the property.
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No Visible Webs, But Spiders Keep Showing Up
Some species don’t spin noticeable webs at all. If you’re seeing spiders regularly without finding webs, they may be hunting types that roam freely. This behavior is typical of wolf spiders or jumping spiders, and it means they’re finding food indoors.
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Infestation Grows Even After Cleaning and Sealing
You’ve vacuumed the webs, sealed the cracks, and removed clutter—yet spiders continue to return. At this point, the infestation may be rooted deeper within the walls or structure. When simple measures fail, professional treatment is often the most effective route to take.
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The Earlier You Intervene, the Easier It Is to Control
Spiders won’t just leave on their own. As long as food sources are present and shelter is available, they will stay and multiply. Acting when you notice the first signs can make a significant difference, especially before nesting sites become widespread and harder to access.
Understanding Spiders
Spiders, such as house spiders, wolf spiders, and jumping spiders, are persistent indoor pests, especially in buildings with consistent heat and humidity. While their size and color vary, they often hide in discreet spots like dark corners, behind furniture, or in wall cracks. They don’t bite, but their presence can be concerning as they feed on insects and other small prey, potentially leading to the spread of unwanted bugs around the home. If left unchecked, spiders can infest living spaces and compromise cleanliness, often indicating issues with moisture or maintenance within the building.
The Problem with Spider Infestations
In Montreal and throughout Quebec, house spiders, wolf spiders, and jumping spiders can be a significant challenge due to their ability to hide and form colonies in hard-to-reach places. These spiders often go unnoticed, nesting in cracks, behind furniture, or in basements and attics, which are common hiding spots in Quebec’s humid and heated environments. Their presence can be difficult to detect until the infestation has spread.
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While over-the-counter traps and sprays may seem like a quick solution, they often fail to target hidden nests, leaving many spiders unaffected. Misuse of these products can also pose risks to your home, pets, and family. The most effective way to deal with a spider infestation in Montreal and Quebec is to call a professional pest control expert. They can assess the situation thoroughly and apply targeted treatments to eliminate the infestation, ensuring your home stays spider-free.
Our Approach to Spider Control
Dealing with a spider problem requires more than just cleaning or using over-the-counter traps. Spiders, whether domestic, wolf, or jumping varieties, are discreet and can hide in tight spaces for long periods without being noticed. Their ability to settle in secluded areas and thrive in various conditions makes a professional approach essential for effective removal.
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Our trained specialists conduct a thorough inspection of your property to identify areas where spiders are most active. Whether they are nesting in cracks, behind furniture, or in basements, we locate their hiding spots and assess the factors contributing to their presence, such as moisture, dark areas, and abandoned webs.
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Once the extent of the issue is determined, we apply targeted treatments to eliminate spiders at the source. Our professional solutions are designed to reach areas where over-the-counter products and traps cannot. With our expertise, you can enjoy a spider-free environment and resume your daily activities with peace of mind.

If you're dealing with Spiders or have any questions, feel free to call our pest control experts at (438) 543-4691. We're here to take care of the problem quickly and efficiently.
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Our team will ensure that your property is completely ant-free, giving you peace of mind knowing the issue is resolved. Let us handle it so you can focus on what matters most.

