Kills over 200 types of weeds, including poison ivy, poison sumac, poison oak, wild blackberry and kudzu. Its fast-acting formula begins absorbing on contact and provides visible results in 24 hours. The comfort wand is easy to use, just spray the leaves to kill the root. This product kills weeds to the root so weeds don't come back, guaranteed. Use on patios and walkways, around homes and buildings, along paths and fences, or other areas where tough weeds are growing. Rain or watering 30 minutes after application will not wash away effectiveness.