Good morning, I was here today to complete a one time service for bees. I inspected the exterior of the home and observed yellow jackets going in and out of a roof void just above rear sliding doors. I applied a liquid non-repellent solution to both entrance/exit points to combat yellow jackets. Please allow 3 to 5 days for all activity to subside. If yellowjacket activity continues after five days, please call our office for additional treatment. Have a wonderful day. Thank you for choosing Green Pest Solutions.