Good morning. Today I completed your one time service for yellow jackets. I applied a like a liquid treatment to the ground nest by the shed. I also treated by the shutter on the shed. I then treated the two paper wasp nest on the back patio. The one under the cabinet and the one in the corner of the back steps. Please allow 10 to 14 days for our products to take effect. Thank you for choosing green pest solutions. Have a great day!