Description Take control of your outdoor space with Roundup Weed and Grass Killer? Concentrate. It kills tough weeds and grasses to the root, including dandelion, large crabgrass, poison ivy, clover (red and white), spotted spurge, and other broadleaf weeds. It is rainproof in as fast as 30-minutes, produces visible results in hours, and allows you to plant 1-days to 30-days after application (see booklet for details). Use Roundup Weed and Grass Killer? Concentrate in flower beds, around trees, along fences, driveways and walkways, freshly cut woody stumps, in large areas for lawn replacement, garden plot preparation and other areas of your yard. Mix the concentrate according to label directions and spot treat or spray evenly each gallon of spray solution over 300 sq. ft. with a tank or hose-end sprayer. Do not allow people or pets to enter the treated area or touch treated plants until spray has dried. 1-64 fl. oz. bottle of Roundup Weed and Grass Killer? Concentrate makes between 10.6 Gal. to 21 Gal. (see booklet for mixing instructions) and covers up to 3,200 to 6,300 sq. ft.