Scotts® Turf Builder® Halts® Crabgrass Preventer with Lawn FoodNew year, new lawn. Scotts Turf Builder Halts Crabgrass Preventer with Lawn Food pre emergent weed killer plus fertilizer stops crabgrass before it invades and protects all season long. It also prevents other listed grassy and broadleaf weeds, including barnyard grass, foxtail, Poa annua, chickweed, and oxalis. The added fertilizer feeds for a fast green up after winter and helps build strong, deep grass roots. Apply Scotts Turf Builder Halts