Thank you for choosing Greenpest solutions for your pest control needs my name is Eric and I was your service technician for today. I began my service by inspecting the area affected by wasps, and after locating where the wasps were coming from, I applied a liquid residual insecticide to the area. Please allow for 3 to 4 days for our product to be fully effective. If you have any questions or concerns, feel free to reach out to us. . Thank you and have a great day!