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Atrazine Weed Killer for St. Augustine Grass.1 Gal. For use in St. Augustine Grass and Centipede Grass. 

• Kills many broadleaf weeds and suppresses crabgrass.
• Applied as a spray at 4 1/3 oz. per gallon, will cover 500 square feet.
• Controls both emerged weeds and weeds from seeds.