Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer Concentrate kills existing weeds and grass down to the root and prevents new weeds from growing for up to 4 monthsThis weed killer and preventer is rainproof in as fast as 30 minutes, and produces visible results in as fast as 6 hoursApply this herbicide to hardscapes and landscapes - cracks and crevices in driveways, sidewalks, and patios, along fences, in mulched beds or around the base of well-established desirable plants, shrubs, or trees, and on gravel areasAll ornamental bedding plants, trees, shrubs, sod, and seed can be planted 4 months after applicationAdd 6 fl. oz. of Roundup Dual Action Concentrate per gallon, mix into tank sprayer, and spray weeds (to prevent new weeds and grasses from growing, you must spray the entire area you want to control, not just the emerged weeds)
