I'm tearing down an old falling apart bldg. here, and I have been avoiding this part. There's a huge poison ivy vine growing on the part that I'm keeping. It's about 14' tall and 8' wide. While I'm not very allergic, this one could be a bit of a problem. At the ground, the vines are bigger than my wrist. I have decided to drench it with Round up, and tear it down this winter. Of course, the high grass surrounding it is filled with the ground cover type poison ivy as well. Check it out.