Ortho 0432960 Max Poison Ivy Tough Brush Killer Concentrate Bottle, 32-Ounce Kills woody plants and vines such as poison oak, poison ivy, willows, oak, wild blackberries and many other unwanted brushy plants and vines Kills tree stumps of alder, maple, manzanita, willow and others Can be used in Ortho Dial N Spray hose-end sprayer or tank-type sprayer Rain-proof in 2 hours Your solution to tough weed problems