Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate is an exclusive formula that kills poison ivy, poison oak, poison sumac, wild blackberry, kudzu, and all types of tough weedsRainproof in as fast as 30 minutes and produces visible results in hoursAllows for planting 1 to 30 days after application (see booklet for details)Use this weed control in residential fields and trails, around trees or shrubs, around homes, buildings, cabins, lodges, and camp sites, along fences and foundations, on vines growing up poles or mature trees, freshly cut woody stumps, and other areas where tough weed are invading your yardMix Roundup Poison Ivy Plus Tough Brush Killer₂ Concentrate according to label directions and spot treat or spray evenly each gallon of spray solution over 300 sq. ft. with a tank or hose-end sprayer