Pull crabgrass by hand when soil is moist, removing roots
Apply a pre-emergent herbicide in early spring before seeds germinate
Use a post-emergent crabgrass killer labeled for active growth
Spot-treat with a selective herbicide safe for your lawn grass
Mow grass at the proper height to help crowd out crabgrass
Water deeply and infrequently to encourage healthy turf
Overseed thin areas to reduce space for crabgrass to spread
Bag and dispose of crabgrass seed heads before they drop seeds
Repeat treatment as needed according to the product label
Follow all label instructions and safety precautions