The days of multiple applications to kill weeds and grasses are over. Just one application of BioAdvanced DuraZone Concentrate Weed & Grass Killer kills existing listed weeds & grasses Plus prevents new listed weeds & grasses up to 6 months. Apply it to the entire zone you want protected against weeds, not just the emerged weeds - creating a weed prevention barrier that continues working for up to 6 months - so you don’t have to. Controlling weeds in your landscape has never been easier.PROPRIETARY 2-in-1 formula: Post-Emergent: Kills existing listed broadleaf weeds; Pre-Emergent: Prevents listed broadleaf weeds for up to 6 monthsWon’t harm lawnsApply anytime spring through fall when temperatures are between 50º-90ºFRainproof in 1 hour29 oz. Ready-To-Spray and 29 oz. Concentrate treat up to 4,500 sq. ft. for Northern turf, and up to 9,000 sq. ft for Southern turf
