Hello and thank you for choosing GreenPest . My name is Eric and for your wasp service for today I began my treatment by inspecting the affected areas. I applied two separate aerosolized insecticides inside of the voids that the yellow jackets were penetrating. Please allow for 2 to 3 days for our treatment to have full effectiveness. If you have any questions or concerns, please reach out to us thank you and have a good day.