For poison ivy BSA (Boy Scouts of America)
recommended this.
It actually works too!
The naphtha pulls the poison oil out.
If you're allergic to poison ivy you should carry a bar of Fels Naptha soap. I didn't believe it until my grandfather and I got into it bad while cutting wood out in the woods.
I pointed at the log and said, "grampaw are we really going to just ignore all the leaves of three?
We cut up the log and I sent granny to the store for laundry soap. They thought I was nuts but I explained that the boy scouts spent much time on this topic.
My nephew wiped his ass with poison ivy leaves...
