TERMITESYYellowjackets usually live in the ground, often under railroad ties or other items on the ground. They usually have two entrances to the nest, so if you treat one, they may come out the other and attack you. Try to find out where they are nesting. Once you find a nest entrance, look all over the area for the other entrance. When you want to control them, you will have to do it at night when they are all in the nest. Late in the afternoon, plug up the extra hole. Then at night go out to the nest and don’t use a flashlight. They will have guards at the entrance and will attack a flashlight. Try to do this before it gets real dark. Then using a bellows duster, shoot a bunch of diatomaceous earth into the entrance hole. Use a lot and then plug up the hole. With both holes blocked, the DE should kill them fairly quickly. If this isn’t possible or something you want to do, then you may want to hire a pest control company to get rid of them for you.