Wasp Nest Removal in Scarborough

Same-day wasp nest removal across Scarborough, handled by a licensed technician who can tell a paper wasp you could leave alone from a yellowjacket nest that lands people in the emergency room. Most nests here come down in one visit. A standard outdoor nest runs $250 to $350, and the work is usually finished inside an hour. If anyone in the house is allergic, or the nest is bigger than a softball and sitting near a door, leave it be. Call, and keep your distance.

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Wasp, hornet, or yellowjacket? How to tell, and which ones sting in swarms

Getting the name right matters because the danger shifts with it. Around Scarborough it is nearly always one of three, and once you know what to look for, the aggressive ones are easy to separate from the calm ones.

• Paper wasps make the open, umbrella-shaped nest that hangs from a railing, a soffit, or the underside of a deck. Look up and you see the cells directly, a small grey honeycomb. Of the three they are the calmest, and they will usually ignore you unless you go after the nest.
• Yellowjackets are the backyard-wreckers of August. Stocky, vivid yellow and black, they set up in the ground, in wall voids, or tucked in a soffit, where the only sign is a steady stream in and out of a single hole. Defensive, quick to swarm, and able to sting repeatedly, this is the nest that sends people to the emergency room.
• Bald-faced hornets hang the big grey football-shaped nest from a tree limb or off the eaves. They run black and white, bigger than a wasp, and turn very defensive close to the nest. Size gives them away, since a hornet nest can house hundreds.

If the nest is a closed grey ball or the wasps are coming out of a single hole in the ground or wall, treat it as aggressive and keep everyone back. Paper wasps under a rail are the one case where waiting is sometimes fine. Everything else is a call.

When wasps are a Scarborough problem (and when the season ends)

Building starts in June, and the nest keeps growing all summer. A May nest is a golf-ball-sized start with a queen and a handful of workers. By August that same nest can hold thousands, which is why the phone runs hot in August and September. The colony peaks in size and temper right when families are still out on the deck and in the yard.

Eventually the calendar does the work for you. Wasps die off with the first hard frost, usually late October in Scarborough, and the nest is not reused the following year. If a nest is high up, looks empty, and it is already November, you can often just leave it. Through the summer, though, an active nest near a walkway or a back door is not a wait-and-see situation.

Where the nests hide in Scarborough homes

Half the job is finding the nest, and Scarborough's housing gives wasps a lot of room to work. The big detached homes and back-splits on deep lots through Agincourt, Woburn, and Guildwood come with roomy yards, garden sheds, and long runs of soffit, and the lots that back onto the Highland Creek and Rouge ravines put nesting cover right at the property line. The usual spots:

• Soffits and eaves. Far and away the most common. A yellowjacket squeezes through a gap in the soffit and builds out of sight, so the only clue is wasps ducking into one corner near the roofline.
• Ground nests. Yellowjackets take over old rodent burrows, the space under a shed, and the joints in a retaining wall, and the ravine-backing yards and mature gardens out east hand them no shortage. Most people find these behind a running lawn mower, which is precisely how you do not want to find one.
• Wall voids. In through a gap around a pipe or a crumbling brick joint, then building right inside the wall. You tend to hear this one before you spot it.
• Sheds, decks, and playsets. Beneath the deck boards, up in a shed roof, under a slide. Anywhere dry and out of the weather, and the deep backyards here have all of it.
• Attic and roof vents. In through a vent and straight into the attic, the worst version of all because now the nest sits inside the structure itself.

A soffit or wall-void nest is the reason we quote a hidden-nest premium. Reaching a nest buried in the structure takes more time and sometimes opening up an access point, and that is real work compared with a nest hanging in plain sight.

Why removing a wasp nest yourself is genuinely dangerous

This is not a chore like clearing a gutter. Three things go wrong, and often all at once.

First, wasps swarm to protect the nest, and unlike a bee, one wasp can sting over and over. Aim a store can at a yellowjacket nest at dusk, miss the hole, and you get a cloud of furious insects and dozens of stings in seconds. Second, most nests sit up high, which means you are on a ladder when the swarm hits, and the fall does more damage than the stings. Third, and this is the one that outweighs the rest:

The other quiet reason to call: the products that actually work on a wall or soffit nest are registered by Health Canada's Pest Management Regulatory Agency and are meant to be applied to the label by a licensed technician. A hardware-store aerosol will chase the wasps out for an evening and rarely kills the nest inside a void.

How we remove a Scarborough wasp nest

1. Locate and identify. We pin down whether it is a wasp, hornet, or yellowjacket and exactly where the nest sits. That settles both the method and the price before any product comes out.
2. Treat the nest directly. An accessible nest gets a registered product straight into it, applied to label. For a soffit, wall, or ground nest, we dose the entry point so the wasps track it back inside and the colony dies.
3. Remove or seal. A nest we can reach comes down once it is dead. A nest inside a void we let die out, then seal the opening so nothing reuses it, since an open cavity is an invitation to next spring's queen.
4. Back it up. If wasp activity picks up again at the same nest inside two months, we return once at no charge.

Most standard nests are same-day and done in a single visit.

Signs it is time to call

• A steady flow of wasps in and out of one hole in the ground, a wall, or the soffit.
• Any grey football-shaped or closed ball-shaped nest sitting near the house.
• A nest close to a door, a walkway, a patio, or a kid's play area.
• More than a few wasps turning up indoors, a hint of a nest inside a wall or attic.
• A known sting allergy in the household and any live nest anywhere on the property.

Common questions

Reviewed August 2026.

For a nest that cannot wait, or anything with an allergy in the home, see emergency pest control. For how every pest is priced, see the cost page.

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