Thanks for the replies. I'll think more than twice before buying Zanfel should I encounter this F#&%ing plant again. In the times in my life I have caught PO (I'm on the West Coast...strictly oak here, no PI), I can't recall any product really working so great as to rush to tell my friends. Some relief until it runs its course is all. The worst case I had was due to brushing leafless stalks in the winter; I didn't realize what they were until it was too late. There was little itching from the rash, only severe pain. I went to the doctor for that one. Got a shot and eventually I recovered....