I have a bunch of poison oak in my yard.  Drives me nuts because it's interspersed with other plants on the hillside where the chickens congregate in the hot afternoons.  Sometimes when there's a broody hen in the nesting boxes, my girls will lay their eggs up there & I have to go searching through the poison oak to find them.  It's real aggravating. 
I hear, however, that llamas like to eat poison oak.  I may go down to the front of the ranch one of these days and borrow my landlady's llama and bring her up here to eat it.
edited for typos