A pesticide composition includes a pesticide component. The pesticide component is an herbicide and is mixed with water for commercial and residential application. The pesticide composition also includes an alkylphenol ethoxylate surfactant and propylene glycol, which increase the effectiveness of the pesticide component. The pesticide composition further includes a thickener component having a terminal group formed from a 1,2-linear alkyl epoxide having from 16 to 18 carbon atoms. The thickener component includes the reaction product of a combination of ethylene oxide and propylene oxide, 1,1,1-trimethyolpropane, and the 1,2-linear alkyl epoxide. The thickener component modifies rheological properties of the pesticide composition to reduce a tendency of the pesticide composition to disperse when sprayed, to reduce a potential wind-drift of the pesticide composition, to increase a shear viscosity and retention, and to increase a rain fastness of the pesticide composition, resulting in a decrease in costs and potential environmental pollution.