Roundup 13 LB Landscape Weed Preventer Prevents Weeds For Up To 6 Months Safe For Use Around Existing Plants Easy To Apply Built In Applicator Uses 85 Less Plastic Than Bottle Prevents The Most Common Weeds Like Crabgrass Chickweed Pigweed Foxtail Features . Prevents weeds for up to 6 months. Safe for use around existing plants. Easy to apply built in applicator uses 85 less plastic than bottle . Prevents the most common weeds like crabgrass chickweed pigweed foxtail. Landscape Weed Preventer Specifications . Capacity 13 lbs