Hi Sharon. As always, your articles are excellent. I saw a yellow jacket in my friend's cottage in Maine, and I wanted to take it out. Stupid me, I took a Kleenex and grab it, and ungratefully it stung me through the Kleenex before I managed to let it go outside. I put vinegar on the sting. The pain disappeared instantly. I was lucky that another friend of mine told me about that. Did your grandmother have other medications for stings of other insects? I think I was stung by a bumblebee recently and I do not know what to do, but just put vinegar on it. It also went away after 3 days.