Made from natural ingredients. Approved for organic gardening and is safe for use around people and pets. Kills all types of actively growing weeds and some grasses. Rainproof when dry. Works at temperatures as low as 40 degrees Fahrenheit and does not trans-locate. Great for use around borders, driveways, sidewalks, around the base of mature trees, around buildings, fence lines, barns and pastures, school grounds, in greenhouses and other areas where control is desired.