Roundup Extended Control 16 Oz. Concentrate Weed & Grass Killer Plus Weed Preventer

Dual-action formula kills to the root and pretreats weed prone areas. Rainproof in 30 minutes. Visible results in 24 hours. Kills weed and grass, then continues to work by preventing weeds from emerging for up to 4 months. Active Ingredients: 18% Glyphosate, 0.30% Imazapic, 0.73% Diquat.