Good morning. Today I completed your one time service for yellow jackets. Upon arrival you showed me a yellow jacket nest near the eaves of the roof and one flying into a void along the wall in front of the house. I applied a liquid treatment to both nests. Please have your contractor avoid those areas for a few days. The yellow jackets are agitated and will sting. Please allow 10 to 14 days for our products to take effect. Thank you for choosing green pest solutions. Have a great day!