Today I completed your one time service. I first started by inspecting the interior and putting tape over the soft spot above the kitchen window to help prevent Yellowjackets from getting inside. I then treated the exterior hole above the kitchen window and along the foundation of the garage where the other Yellowjacket nest is with a liquid residual to help prevent Yellowjacket activity. Please allow this treatment to take two weeks for full effect as it will agitate insects. Please contact us with any questions or concerns. Thank you for choosing Green Pest Solutions have a great day.