Just a suggestion about spraying poison ivy to kill it: Round up is not really for woody shrubs like poison ivy. You will have a better kill if you use a shrub killer that has triclopyr as the active chemical. It will take longer for a complete die-off, but it will get down in the plant and kill the roots, and one application will do it. You can add a squirt of dish washing liquid to the sprayer, to help the chemical stay on the leaves.