Two Products In One! Primary portion of this combination herbicide delivers the active ingredients through the foliage and moves systematically to the roots, killing the weed. The secondary portion functions as an invisible barrier on the soil preventing the development of weeds. (Active ingredients 40.15% Glyphosate and 7.51% prodiamine). Add 3 to 6 fluid ounces to 1 gallon of water and treat 1,000 sq. ft. Use around established landscape plantings, on gravel areas, along edges of lawn and fence lines, crevices, cracks, driveways, sidewalks and patios. Gallon covers 21,333 - 42,666 sq. ft.