Post-emergent kills existing broadleaf weeds and prevents new broadleaf weeds for up to 6 months. Won't harm lawns. Apply anytime spring thru fall. Rainproof in 1 hour. Treats up to 3750 square feet for Northern turf, and up to 7500 square feet for Southern turf. Active ingredients: 2.63% Isoxaben, 4.73% 2,4-D dimethylamine salt, 1.10% Mecoprop-p potassium salt, 0.52% Dicamba, potassium salt. Glyphosate-free.