HomeProductsRetailRoundup Dual Action Weed & Grass Killer (Concentrate)Roundup Dual Action Weed & Grass Killer (Concentrate)$34.99Weed and grass killer concentrate. 4 month preventer, covers up to 1600 sq. ft. Roundup Dual Action Weed & Grass Killer (Concentrate) quantity Calculate MaterialsDelivery date or pick up on location can be scheduled during the checkout process. Add to cart Material CalculatorUse our global Material Calculator to compare material types based on your project needs. Fill in the boxes below and select Material to be Used for comparison.Area to be Filledsquare feetInstallation DepthinchesMaterial to be UsedSelect Material2B Limestone2A Modified StoneMulchNutri-SoilTotal Area to be Coveredcubic yardsEstimated weight per yardlbs per yardEstimated required weighttonsEmailThis field is for validation purposes and should be left unchanged.