I don’t know of anything that will kill it once established but glyphosphate. I tried multiple selective killers on my lawn, and finally I killed it with glyphosphate and reseeded, heavily. I apply 2-4-D early in the year and overseed shortly thereafter to keep it from getting an opportunity, and apply 2-4-D again late in the year to keep the rif raf out. Seems to work OK, so far so good.
Mike