Zuzu, when I'm going to be in situations like that where I might run on yellow jackets to wasps, hornets & the like; I carry a small container of ammonia with me & move it along as I move along so it's always close by. I usually take a cosmetic pad with it so I can soak it asap if I get stung. Put the ammonia on the pad & hold it on the sting for a minute or so. It breaks down the protein in the poison so you don't get all the swelling, itching stuff going on. Works for fire ant bites too.
