Wasp Nest Removal in Montreal
Yellow jackets, hornets, or paper wasps threatening your family? Blackline Pest Control safely removes nests from any location — eaves, attics, underground, or wall voids — with full protective equipment and a 100-day guarantee.
Why Wasp Nests Are a Serious Danger in Montreal
Montreal's warm summers provide ideal conditions for wasp colonies to grow rapidly. A yellow jacket nest that starts with a single queen in May can contain 5,000–15,000 workers by August. Bald-faced hornet nests — the large, football-shaped grey structures often seen hanging from trees or eaves — can house up to 700 hornets and are among the most aggressive stinging insects in Quebec.
Unlike bees, wasps can sting multiple times without dying. When a nest is disturbed, they release alarm pheromones that trigger a coordinated mass attack. For individuals with allergies to wasp venom, a single sting can cause anaphylactic shock — a life-threatening emergency. Even for non-allergic individuals, multiple stings from a disturbed colony can cause serious medical complications.
Yellow jackets are particularly dangerous because they frequently nest underground in abandoned rodent burrows, making them invisible until someone accidentally steps on or near the nest entrance. They are also attracted to outdoor dining areas in late summer, becoming aggressive scavengers that can ruin backyard gatherings and pose a constant threat to children and pets.
Blackline Pest Control technicians are equipped with full protective suits, professional-grade insecticides, and the experience to safely remove nests from any location — including underground nests, nests inside wall voids, and nests in hard-to-reach areas like attic peaks and high eaves. We treat the nest, remove it, and apply residual treatment to prevent rebuilding.
How We Remove Wasp Nests in Montreal
Safe, complete, and guaranteed — from assessment to removal to prevention.
Assessment & Species ID
We identify the wasp or hornet species, locate the nest, assess its size and accessibility, and determine the safest removal approach. Species identification is critical — yellow jackets, hornets, and paper wasps require different treatment protocols.
Protective Equipment & Safety
Our technicians suit up in full beekeeping-grade protective gear before approaching any nest. We establish a safety perimeter and ensure all bystanders are at a safe distance before beginning treatment.
Insecticide Treatment & Nest Removal
We apply professional-grade insecticide directly into the nest entrance, killing the colony rapidly. Once the nest is neutralized, we physically remove it and bag it for disposal. For underground nests, we treat the entrance and seal it after elimination.
Residual Treatment & Prevention
We apply residual insecticide to the removal site to kill any returning foragers and deter rebuilding. We also inspect the property for additional nests and provide recommendations for sealing entry points. Our 100-day guarantee covers free re-treatment if wasps return.
Pricing & Our 100-Day Guarantee
Single Accessible Nest
- Nest treatment & removal
- Residual spray
- 100-day guarantee
- Same-day available
Underground / Wall Void Nest
- Full assessment
- Insecticide treatment
- Follow-up visit included
- Entry point sealing
- 100-day guarantee
Multiple Nests / Commercial
- Full property inspection
- All nests treated
- Ongoing prevention
- 100-day guarantee
- Priority scheduling
Emergency same-day wasp nest removal available. If you have a wasp nest near a high-traffic area or someone in your household has a venom allergy, call us immediately: 514-809-1999
Signs of a Wasp Nest in Your Montreal Home or Business
High Wasp Traffic Around One Area
Seeing multiple wasps repeatedly flying to and from the same spot — under eaves, near a tree, along a fence line, or into a ground hole — is the clearest sign of a nearby nest. The flight path becomes more defined as the colony grows.
Paper-Like Nest Structure
Wasp nests are made from chewed wood fibres mixed with saliva, creating a distinctive grey paper-like material. They can be found under eaves, in attic vents, attached to tree branches, inside sheds, or hanging from deck structures.
Ground Holes with Wasp Activity
Yellow jackets frequently nest underground, using abandoned rodent burrows or natural soil cavities. A hole in the ground with wasps flying in and out is a yellow jacket nest — one of the most dangerous types to disturb accidentally.
Increased Wasp Presence Near Food
In late summer, yellow jacket colonies reach peak size and workers become aggressive scavengers, hovering around outdoor dining areas, garbage bins, and sweet drinks. This behaviour intensifies as the colony prepares for winter.
Wasps Entering Wall Voids or Attic
Wasps entering through gaps in siding, soffit vents, or roof edges may be nesting inside your wall voids or attic. These hidden nests can grow very large before being discovered and are particularly difficult to remove safely.
Buzzing Sound from Walls or Ceiling
A persistent buzzing or humming sound coming from inside a wall, ceiling, or floor void — especially in summer — may indicate a wasp colony nesting inside your structure. This requires immediate professional assessment.
Signes de nid de guêpes / Señales de nido de avispas
🇫🇷 Trafic intense de guêpes · Structure en papier · Trous dans le sol · Guêpes agressives · Guêpes dans les murs · Bourdonnement
🇪🇸 Tráfico intenso de avispas · Estructura de papel · Agujeros en el suelo · Avispas agresivas · Avispas en paredes · Zumbido
We Remove Wasp Nests Across Montreal and Surrounding Areas
Balconies & rooftops
Triplexes & backyards
Heritage homes & gardens
Large properties & trees
Suburban homes & decks
South Shore residences
New developments
Commercial & industrial
Riverfront properties
Family homes & yards
East-end residential
Residential & parks
Frequently Asked Questions About Wasp Nest Removal in Montreal
Is it safe to remove a wasp nest myself in Montreal?
No — DIY wasp nest removal is extremely dangerous. Disturbing a nest can trigger a mass attack from hundreds of wasps simultaneously. Yellow jackets and bald-faced hornets are particularly aggressive when their nest is threatened. Professional removal with proper protective equipment and insecticide is the only safe approach.
When is the best time to remove a wasp nest in Montreal?
The best time for wasp nest removal is early morning or late evening when wasps are less active and most of the colony is inside the nest. However, our technicians are equipped to safely remove nests at any time of day. We recommend not waiting — wasp colonies grow rapidly through summer.
What types of wasps and hornets are common in Montreal?
The most common stinging insects in Montreal are yellow jackets (Vespula spp.), bald-faced hornets (Dolichovespula maculata), paper wasps (Polistes spp.), and European hornets (Vespa crabro). Each species has different nesting habits and aggression levels, requiring different removal approaches.
How long does wasp nest removal take?
Most wasp nest removals take 30–60 minutes. Accessible nests in eaves or on structures are typically treated and removed in a single visit. Underground yellow jacket nests or nests inside wall voids may require a follow-up visit 48 hours later to confirm complete elimination.
Will wasps rebuild their nest after removal?
Wasps do not reuse old nests, but they may build a new nest in the same location the following season if the site is attractive. We treat the removal site with residual insecticide to deter rebuilding and provide recommendations for sealing entry points to prevent future nesting.
How much does wasp nest removal cost in Montreal?
Wasp nest removal in Montreal starts at $199 for a single accessible nest. Underground nests, nests inside wall voids, or multiple nests on the same property may cost $300–$600. We provide a free assessment and transparent quote before any work begins.
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Learn MoreWhat Clients Say About Our Wasp Nest Removal Service
Real feedback from Montreal homeowners and businesses we've helped.
“Massive yellow jacket nest underground in my backyard. Kids couldn't go outside. Blackline came same day, removed it safely, and sealed the hole. Incredible response time and profe...”
“Hornet nest the size of a basketball under my eave. Called Blackline at 7am and they were there by 10am. Fully suited up, removed the nest completely, applied residual spray. Zero ...”
“Wasps nesting inside my wall. Could hear buzzing but couldn't see the nest. Blackline located it, treated through a small access point, and the colony was dead within 24 hours. No ...”
“My son is allergic to wasp stings and we had a nest near our front door. Blackline treated it as an emergency and came within 2 hours. Completely professional and thorough. Lifesav...”
“Caught the nest early in May when it was still small. Blackline removed it quickly and cheaply. They told me to call early next year too — great advice. Much easier than waiting un...”
“Had two nests — one visible under the deck and one underground. Both removed in one visit. The underground one needed a follow-up but they came back at no charge. Good service over...”
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