The economical, effective way to handle larger areas, Roundup® concentrates are simple to prepare and use and they deliver all the weed-control power you expect from the Roundup® brand. Roundup® weed and grass killer concentrate plus is ideal for use around flowers, shrubs and trees, on patios, walkways, driveways, gravel areas and mulch beds and along fences, edging and foundations. It is also effective on large areas such as lawn replacements or garden plot preparation. For better results, add 6 fl-oz of concentrate to 1 gal of water in a Roundup® brand premium sprayer. The formula is rainproof in 30 min and with FastAct technology, you will see visible results in 12 hr.