RM43 43% Glyphosate Plus Weed Preventer Total Vegetation Control is ideal for fence rows, gravel paths, sidewalks, driveways, parking areas and around farm buildings and barns -- anywhere you want to spray once and be done for up to 1 year. The concentrated formula of glyphosate and imazapyr is effective against most noxious 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. Do not spray this product over the root systems of desirable plants. 2.5 gallons treats 43,243 square feet.