The yellowjackets are back in the compost bin.(post# 26). I took your advise and just ordered some Bifen I/T from Do My Own. I can wait a couple days.I spray bifen I/T in the yard 3 or 4 times a year, no fire ants, or any ants, bugs, or any other insects. Do my fathers yard too, atv with a 25 gallon boom sprayer. I put the strongest dose around the perimeter of the house working out to the property line. I have yet to have any issues with bugs since then. Even keeps the mosquitos at bay too for a little while.