Mow the lawn to about 3 inches tall, in order to weaken the Bermuda grass.
Make sure your grass on your lawn is healthy, because strong healthy grass will choke out Bermuda grass by crowding it out. Fertilize your lawn accordingly, depending on your climate, type of grass and season.
Water your lawn about one to two times per week, for about 20 minutes each time. This will help strengthen the roots of your grass, which will in turn help crowd out the Bermuda grass. Frequent and quick watering only encourages Bermuda weed grass growth.
Choose a herbicide for large batches of Bermuda weed grass, and make sure it has fenoxaprop in it. Make sure to follow the instructions exactly, as different herbicides require different procedures. For Bermuda weed grass, it is common to apply the herbicide several times to get rid of all of it.