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After treatment — Wasps and Nests

Wasps still circling the nest after treatment is normal — those are foragers returning. Here is what to do.

Wasps and Nests
Re-entry: 2 to 4 hours (outdoor area)
Full result: 24 to 48 hours

What happens, day by day

Understanding the timeline avoids needless worry — and tells you when something is genuinely wrong.

  1. 0–4 h

    Stay-away period

    Stay indoors with children and pets. Activity around the nest is intense and the wasps are agitated.

  2. 24 h

    Activity drops

    Most of the colony is eliminated. You will see wasps on the ground, slow or dying.

  3. 24–48 h

    Foragers returning

    Wasps that were out flying during treatment return to the nest and die in turn on contact with the product.

  4. 3–7 days

    Nest inactive

    The nest can be safely removed, then the opening or crack used must be sealed.

What to do in the first 48 hours

  1. 1

    Stay away from the area for 2 to 4 hours and keep children and pets indoors.

  2. 2

    Do not touch the nest, even if it appears inactive: live wasps may still be inside.

  3. 3

    Keep windows near the nest closed until the next day.

  4. 4

    Rinse patio furniture and toys that were nearby before using them again.

⚠️

What you must not do

  • Do not remove the nest before the technician confirms it is safe, generally after 24 to 48 hours.
  • Do not plug the opening of a wall nest while it is still active: the wasps would chew an exit into the home's interior.
  • Do not spray any store-bought product over the professional treatment.
  • Do not let children play under the treated area on the first day.

😌This is normal

  • Wasps circling the location for 24 to 48 hours.
  • Wasps on the ground, slow, disoriented or dying.
  • A faint product odour in the immediate vicinity of the nest.

📞Call us back if…

  • Activity still intense after 5 to 7 days: there may be a second nest.
  • Wasps appearing inside the home — a sign of a wall nest that broke through to the interior.
  • A new nest visible elsewhere on the property.
  • Any sting to an allergic person: seek medical care immediately.
Call (514) 835-2108

Your written guarantee covers a free return visit during the covered period.

Preventing a return

A successful treatment eliminates the current infestation. These habits prevent the next one.

  • Once the nest is removed, seal the crack, soffit or opening used: the location stays attractive to a future queen.
  • Inspect eaves, shed and decks every spring — nests are rebuilt from scratch each year.
  • Keep outdoor garbage tightly closed and avoid leaving sweet food uncovered on the patio.
  • Repair damaged screens and window seals.

Frequently Asked Questions

When can I remove the wasp nest after treatment?
Wait 24 to 48 hours and for your technician's confirmation. This delay lets foragers that were away during treatment return and contact the product. Once the nest is removed, seal the opening to prevent a new queen from settling there.
There are still wasps flying, did the treatment fail?
No. Wasps that were out flying during the intervention return to the nest within the next 24 to 48 hours and die in turn. Residual activity during that period is expected. If it remains intense after 5 to 7 days, contact us: there may be a second nest.
Can wasps come back to the same spot next year?
A nest is never reused, but the location itself stays attractive: sheltered, dry and well oriented. That's why you should seal the opening after removal and inspect the area each spring, when founding queens are looking for a site.

Unsure after your treatment?

Our team answers your questions and schedules a free return visit if your guarantee applies.