Roundup Weed And Grass Killer kills the toughest weeds and grasses to the root, guaranteed. Convenient, no-mix formula can be used in and around vegetable gardens, flower beds, tree rings, and mulched beds, as well as in driveways, walkways, and patios. Rainproof in ten minutes. Visible results in 3 hours. Active ingredients: 2% Glyphosate; 2% Pelargonic acid, and related fatty acids.