I have centipede grass growing in a 5 foot x 5 foot area of my front lawn, which is zoysia. I have been hand pulling it out but I wondered if there was a better way.
Killing Centipede Grass in My Zoysia
The problem here is that herbicides that kill grass don't differentiate between one kind of grass and another. That's why you almost have to physically remove only the offending type of grass. This article will suggest some alternatives to hand pulling: https://www.gardeningknowhow.com/plant-problems/weeds/how-to-kill-grass-naturally-kill-unwanted-grass-in-your-yard.htm