Roundup Poison Ivy Plus Tough Brush Killer with Comfort WandRoundup Poison Ivy Plus Tough Brush Killer with Comfort Wand is an exclusive formula that kills poison ivy, poison oak, poison sumac, wild blackberry, kudzu, and all types of tough weeds. In a ready to use formula no mixing needed. Rainproof in as fast as 30 minutes and produces visible results in hours Use this in residential fields, trails, buildings, cabins, lodges, and camp sites, along fences and foundations, on vines growing up poles and around