At the end of wasp season, why do wasps continue to come into the house?

Randy Bilesky BScF CPA RPF

President at Go Green

If you have had a wasp nest in the attic that was sprayed, several things might happen that could lead to wasps continuing to enter the house:

Delayed Effect: Insecticides often take some time to kill the wasps. If you spray a nest, some wasps might still be alive and active for a while afterward, even though the queen has expired. The larvae may continue to hatch and begin searching for food.
Disruption: Spraying can disrupt the nest, causing disoriented or panicked wasps to leave the nest and fly around in search of a new place to go, which might lead them into the house.
Entrances and Exits: Wasps might use other entry points to get into the house, especially if the attic is not perfectly sealed. If there are gaps or openings, wasps might continue to come in even after the nest is treated.
New Nests: If the nest was not completely destroyed or if some wasps survived, they might establish a new nest or find a different place to live.
Attractants: If the house has food or sugary substances, it might attract the remaining wasps looking for food.

To prevent this issue, it’s important to thoroughly treat the nest and ensure all entry points into the house are sealed.

At the end of wasp season, why do wasps continue to come into the house?