How Often Should I Apply?
With Roundup® Weed & Grass Killer products, one application is usually all it takes to get rid of most pesky weeds.
So, if you find yourself revisiting weed-prone hardscapes like walkways, patios, and driveways, choose Roundup® Extended Control Weed & Grass Killer Plus Weed Preventer products or Roundup® Max Control 365 products. They’ll not only control existing weeds, but prevent new ones from coming back for up to four months or up to a year, respectively.
However, remember that these products will keep any plants from growing in the area for a while, so don’t use them in spots you’ll want to plant soon.
Oh, and another little tip — be careful about hand pulling. When you pull weeds, you may not remove the entire root. Plus, you can accidentally spread buried seeds, and in turn, welcome more weeds.