Roundup® Extended Control Weed & Grass Killer Plus Weed Preventer Ready-To-Use 1.33-GAL. Dual-action formula works two ways: kills existing weeds and grasses down to the roots; and prevents any new weeds and grasses from growing for up to 3* months. Visible results in 24 hours. Rainproof protection in 30 minutes. Refillable with Roundup® Extended Control Weed & Grass Killer Plus Weed Preventer Concentrate.

The ultimate in weed control. Dual action formula kills existing weeds and grasses—roots and all—
and prevents new ones from growing. *A four-month preventative formula may be available in some areas.