SLINGBLADE aerosol is an EPA registered solvent base week killer. It is a combination of 2’4-D and Bromacil. This combination insures rapid top kill of all weeds and will also prevent future growth up to one year. Upside down valve allows ease of use. Can sprays upside down only. Sling Blade is also available in bulk form. Selective and non selective, 5,30 and 55 gallon drums.