Defends its nest aggressively and can sting repeatedly, so a nest near a door or balcony needs removing rather than disturbing.
Wasps build in sheltered voids — under a roof overhang, behind cladding, inside an unused AC unit — and a colony grows through the season until it can hold thousands of insects. They become noticeably more aggressive late in the season when the nest is largest.
Unlike a bee, a wasp can sting more than once and will call others to defend the nest. Stings are painful for anyone and genuinely dangerous for people with an allergy, which is why spraying a nest yourself is the worst way to deal with one.
The nest is treated directly, in protective equipment and usually at dusk when the colony is inside, then removed once activity stops so it cannot be reoccupied. We also seal the void that attracted them, since a good nesting spot rarely stays empty.
Practical steps that make a repeat infestation far less likely after treatment.
Check eaves, parapets and unused AC housings in spring, while a nest is still the size of a golf ball
Seal gaps into wall cavities and roof voids once you know they're empty
Keep sweet drinks covered outdoors and bins closed
Never block a nest entrance — it drives the colony into the room instead
The things people ask us most before booking this treatment.
We'd strongly advise against it. A disturbed colony defends the nest together, wasps sting repeatedly, and a partial treatment usually drives them inside the building instead. This is a job for protective equipment and the right timing.
No — that's the one thing that reliably makes it worse. Blocked in, the colony works its way through the cavity and often comes out inside the room. Leave the entrance clear and call us.
A good nesting void rarely stays empty, which is why we remove the nest once activity stops and seal the gap that attracted them. Treating without proofing tends to buy you one season.
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