My grandmother, back in the 50's got it several times when she and my grandfather were trying to clear a lot on which to built. At the time, the Clorox bottle had a 'recipe' on it to cure poison ivy. It was a mix of Clorox and water. She used it religiously and it worked. Several years ago, my daughter got in some and I wrote the Colrox folks and they denied ever having it on their bottle. Alas, I remember it well.