It's hard to get rid of once you've had it for a while. We have so much I won't even try.
It comes up from seed every year. If you have it in the seedbank, it will keep coming up for 3-5 years even if you eradicate everything growing this year. If you can keep it from going to seed each year, you can get rid of it. If you mow at the right time, you'll stop it from seeding. If you mow too early, it will still seed but on short stems.
A google search will find you lots of state and university info on managing it.