I have a tree in my back yard that has a P.I. root growing up it. I cut the root at the base and this worked in drying up the Poison Ivy leaves, but now they are falling from the vine into my yard! Since they are brown and shriveled up, is it OK to mow my back yard and mow over the dead leaves? OR can they still have some of the poisonous oil on them long after they are dead? |