My in laws have a huge patch of this growing behing their house and I am severly allergic to poison ivy , is this the real thing? Also how should they go about removing it? Thanks for any info!!
Kind of does look a little like what I have seen of Poison Ivy.
Here is a link that might be useful: Poison Ivy
Both are quite variable in leaf shape. Hortus III defines them with the same botanical name, Rhus radicans and or R. toxicodendron. Anyway, for sure #2 is poison ivy.
leaves of 3 let it be.
Yep. Sure looks like it.