Compare N Save , 2.5 Gallon, Concentrate, 41% Grass & Weed Killer, Contains 41% Glyphosate Plus Surfactant, Kills Weeds & Grass, Roots & All, Single Application, Rainproof In 2 Hours, Visible Results In As Little As 2 To 4 Days, 2.5 Gallons Makes Up To 210 Gallons Of Ready To Use Spray & Treats Over 62,000 SQFT.