There is an herb called plantain (plantago major) that grows all over the place down here. If you break off a leaf and chew it up, then plaster it on the sting, it helps to reduce the swelling and pain. One of my daughters was stung last year on the arm and swelled up something awful. A few months later she was stung on the finger/hand. Her sister grabbed a leaf or two of plantain, chewed it up and put it on the sting, then covered it with a bandage. By the time I got home from work, she couldn't even find where it had stung her. It might not work for everyone, but I use it whenever I'm stung. The plantain looks sort of like turnip greens and they grow everywhere it seems. They pop up in my wife's flower beds regularly.