ranger ranger pro glyphosate grass &amp; weed herbicide concentrate 2.5 gal. ranger pro ranger pro is a postemergence, systemic herbicide with no residual soil activity. it gives broad-spectrum control of many annual weeds, perennial weeds, woody brush and trees. it is formulated as a water-soluble liquid containing surfactant and no additional surfactant is needed or recommended. it may be applied through standard equipment after dilution and mixing with water or other carriers according to label instructions.