Good morning. Today I completed your one time service for yellow jacket nesting in the back yard. Your fence contractor showed me yellow jacket ground nesting. I applied a liquid treatment to the ground nest. I also treated around the fence where I saw them flying underneath. I then inspected the rest of the perimeter and didn’t find any other nesting at this time. Please avoid the area 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!