re: Dallisgrass has taken over my lawn

I have this problem in certain spots in my yard. It grows so much faster than my St aug grass making the yard look terrible if I don't cut every 3 days or so. Ive looked around online, but it doesn't look like there's anything that will kill it without harming the St aug. I read that you just have to cut it before the seed stalks grow and let the St aug take over. But again, its hard to cut your grass 3 times week!