Good morning, I completed your quarterly service today. I started by removing cobwebs from around doors and windows. I inspected the window in question, and I found gaps on the side that yellow jackets could easily fit into. I would recommend caulking around all of these windows to prevent pest entry. I then inspected and treated the exterior foundation, and around doors/windows, with a liquid residual for ants and other general pests. I found no other nests at this time. Please allow 2 to 3 weeks for the treatments full effect. I also checked the termite monitors and found no activity. If you have any other questions or concerns, please reach out to the office. Thank you for choosing Green Pest Solutions!