The lawn looks terrible

The front lawn isn't looking so good, and to me that's a good thing. We're about 2 weeks into the second Certainty herbicide application, and about 6 weeks after the first application. Here's a few photos from today (mowed yesterday):

Looking thin.

A closeup. This is a common sight: a bit of living tall fescue
 surrounded by bare patches of dead and/or dying tall fescue (and
Kentucky bluegrass, of course).

The photos make it look worse than it looks in reality, but there are definitely some rather large patches of bare grass now - which I think shows the extent of the problem. Soon the grass should begin recovering as it did roughly 3 weeks after the first application, but hopefully only the Kentucky bluegrass this time!