On todays visit, I treated Yellowjackets entering and exiting eave with a liquid application. After about 2 to 3 days, the wasps should become lethargic, 5 to 7 days activity should die down significantly, and 10 to 14 days, the nest should be neutralized. If there is activity after 10 to 14 days, please call us back for a re treat. Thank you for choosing Green Pest Solutions!