Kills to the root! KleenUp Grass and Weed Killer, packaged as a concentrate, kill all unwanted weeds and grasses. It's great for preparing flower beds, vegetable and ornamental garden sites, renovating lawns, and for multipurpose weed control. You are able to reseed as early as 7 days after treatment and visible results occur by this time as well. Complete, to-the-root control in 2-4 weeks. 41% super concentrate make up to 10 gallons of spray and treat approximately 3,000 square feet.