Answer: The best approach is to cut the stems of the poison ivy at ground level and immediately paint the stubs with Round Up or Brush B Gon. The herbicide will be transported to the roots and will kill them. As new sprouts appear, cut them down and paint them, too. As long as you keep children and pets out of the area until the herbicide dries, it shouldn't cause harm.
Good luck with your project!
Q&A Library Searching Tips