ROUND UP WEED KILLER NORTHERN ROOTS 32 OZ | Roundup for lawns3 is a formula that kills weeds, not the lawn. It controls over 250 common lawn weeds, roots and all and is especially effective on hard-to-kill weeds such as crabgrass, dandelion, clover and yellow nutsedge. The ready-to-spray applicator is great for broadcast application to your entire lawn and covers up to 5000 sq-ft. This fast acting formula starts killing on contact and kills weeds down to the root so they don't come back. In addition, its rain-proof in as little as 3 hrs. Roundup for Lawns3 is a simple step towards a beautiful, weed-free lawn.