@Green Witch,
Yep.
I don't know if it's because of that stuff or I'm just not someone who has reactions to poison ivy, but in my whole epic battle with poison ivy I didn't get a rash or any other ill effects one time. I DID have skin contact a few times (even though I was extremely careful), and Tecnu-ed it off right away.
Day 2, kid said he still didn't see any poison ivy at all.
I went back and read some of my old threads about it and remembered the deep angst that whole thing caused, pretty amazing that it seems to be so well under control.