Eraser Max is ideal for fence rows, gravel paths, sidewalks, driveways, parking areas and around farm buildings and barns. One application kills weeds for up to one year. The concentrated formula of glyphosate and imazapyr is effective against most weeds, grasses, vines, brush and trees. For use on non-crop areas as a spot treatment for brush, vines and weeds or on bare ground for total vegetation control. One gallon treats 17,297 square feet.