For some odd reason, our property is currently being overrun with poison ivy.
My DH has been such a trooper and is the only one of the four of us to get any, as he's pulling most of it (I guess I cover up better?). He had it most of last summer, and now it's back this spring too. Arms, legs, ankles, wrists - you name it!
In his research, he's discovered that poison ivy is only poisonous to humans. No other species can contract the itchies - although if your dog tromps through it and you pet him, you get it (not the dog). Also, burning the poison ivy (like in a burn pit) - IS EXTREMELY DANGEROUS!
If you burn any part of it - the oils become airborne, and if lodged inside your lungs will cause immeasureable damage quickly. DO NOT BURN!
Also, if you are anywhere near the seacoast - last summer we discovered something very very odd. He had a bad case of it just above the sock-line at his ankle. He was standing in the ocean and a jellyfish attached itself to the poison ivy spot. The poison ivy ceased to itch immediately (although the jellyfish did sting a lot worse) and it healed up in less than two days (not two weeks like the other spots on him at the time). Wierd, huh? But true!
Witchhazel (found at all Walgreens) takes away the itches, as does exceptionally hot water on it for as long as you can stand. Those are the two 'cures' we've found that work best for him.
However, our hens refuse to munch on the stuff. Nope, not happening. Every other piece of green - oh yeah! But not the ivy....go figure. They also are not very fond of 'creeping Jenny' as we call it here. They'll peck a bit, but only a bit.