Good morning, I was here today to complete a one time service for bees. I inspected the back corner of your yard and located yellow jackets moving in and out of void below large tree on your property. I applied a liquid non-repellent solution to the yellow jackets hole. Please allow 3 to 5 days for best results. Please refrain from using that area until all activity has subsided. If yellowjacket activity continues after five days, please call our office to have retreated. Have a wonderful day. Thank you for choosing Green Pest Solutions.