Today I rendered your service for yellow jackets. During my inspection I found no activity at this time , but, there were corpses and signs of a nest. After talking with Mr about options and common behaviors of the insect in question, he decided to go ahead with the service for piece of mind. I treated the entry point with a liquid residual insect control along with the entire exterior perimeter of the home. Please allow 3 to 7 days to see full effect. Please call with any issues. Thank you for choosing Green Pest Solutions.