Ferti-lome Weed Free Zone is a combination of four proven Weed Killers: 2,4-D, mecoprop-p, dicamba and carfentrazone-ethyl. Post-emergent applications of this will control a wide range of broadleaf lawn weeds in cool and warm-season residential lawns. Ferti-lome Weed Free Zone is fast acting with noticeable effects just hours after the application and plants death within 7-14 days after the application.