Thank you for choosing Greenpest solutions my name is Eric and I was your technician for today. I began my service by inspecting the affected area and found activity of yellow jackets along the foundation around the back of your home. They penetrated into a hole underneath your back porch door. To begin my treatment, I injected in aerosolized insecticide inside of the opening in which the Yellowjackets were flying and creating harborage. I also used a secondary insecticide aerosol eliminate any that were flying around the area as well. I highly recommend avoiding this area for the next 48 to 72 hours. They will have an erratic activity and this is the best option in order to stay safe. If you have any questions or concerns, please reach out to us. Thank you and have a great day.