I have a Crepe Myrtle that is infested with yellow jackets. The base of the tree has a ground cover, I can't remember the name (sorry). Therefore, I don't know exactly where the nest is. How do I kill of these little PITA's...btw, I spent Sunday morning in Urgent care as I'm allergic to Yellow Jackets. Looking forward to your suggestions. Please no gas as it is very close to the house.