Ideal for use in post-emergent weed control in industrial sites as well as forestry, turf, vegetation management, and ornamental areas. Razor Pro controls most annual and perennial weeds and is highly effective on woody brush and plants. This surfactant-loaded liquid formulation is rainfast within two hours of application and eliminates the need for additional surfactant. The herbicide moves from the point of contact down into the plant’s root system to disrupt the enzyme which controls production of amino acids essential to plant growth. Active ingredient is 41% Glyphosate Isopropylamine Salt. 2-1/2 Gallon Container.