TecNu was developed out of the need to remove ash and cinder after an atomic
explosion and subsequent firestorm according to some of the boxes.

I have a couple of blisters at the moment, from an area that had no visible
evidence of the "leaves of three - let it be" in the "woods" next to a
sewerage treatment plant, so maybe it's a contact rash from a tool. Very
dangerous to be around burning poison ivy. Robins Island, in the Peconic Bay
of Long Island, NY was said to have one of the larger poison oaks on record
about a 40' high tree, according to a US government bulletin on the plants
with the irritant oils. Ivy can also be a bush or shrub as well as a vine.

George Myers