Wasp Nest Removal in Saint-Hubert: When to Call a Professional

Published March 11, 2026 · Extermination DMP

Every summer, homeowners across Saint-Hubert, Longueuil, and the greater South Shore discover wasp nests tucked under eaves, inside sheds, or even underground in the garden. While a single wasp is rarely dangerous, a nest containing hundreds — or thousands — of workers is a genuine safety risk, especially for anyone with a sting allergy. Here is what you need to know before deciding whether to handle it yourself or call a professional.

Common Wasp Species on the South Shore

• Yellow jackets (Vespula species) build papery nests in wall cavities, attics, and underground burrows. They are highly aggressive when disturbed and can sting repeatedly.
• Paper wasps (Polistes species) create small, open-comb nests under porch ceilings, deck railings, and window ledges. They are less aggressive but will defend their nest if threatened.
• Bald-faced hornets build large grey football-shaped nests in trees and under soffits. They are extremely defensive and can mobilize the entire colony in seconds.

When You Can Handle It Yourself

A small paper wasp nest — roughly the size of a golf ball — with fewer than a dozen visible cells can sometimes be knocked down with a long stick at night when wasps are dormant. Wear long sleeves, pants, and gloves, and have an escape route planned. This approach only works for paper wasps in accessible locations early in the season (May or June) before the colony grows.

When to Call an Exterminator

Call a professional if any of the following apply:

• The nest is larger than a tennis ball.
• You cannot see the nest but wasps are streaming in and out of a hole in siding, soffit, or the ground.
• The nest is at height — on a second-storey eave, in a tree, or inside an attic.
• Anyone in the household has a known allergy to stings.
• The species is a yellow jacket or bald-faced hornet — both are highly aggressive.

Professional exterminators use specialized dust or liquid insecticides injected directly into the nest entry point, typically at dusk when all workers have returned. The nest is neutralized within hours, and the physical structure can be removed the following day.

Why Speed Matters

Wasp colonies grow throughout the summer. A nest that held 50 workers in June may contain 5,000 by August. Early intervention is faster, safer, and less expensive. If you spot wasps building a new nest in May, that is the ideal time to act.

After the Nest Is Gone

Once the colony is eliminated, seal the entry point to prevent a new queen from re-using the site next spring. Wasps are attracted to sheltered voids with southern exposure — the same spots year after year. Caulking gaps in soffits, replacing damaged vent screens, and filling ground holes removes the invitation.

At Extermination DMP, our team is based right here in Saint-Hubert. We respond to wasp calls the same day during peak season and carry full protective equipment to handle nests of any size safely.