I have a new customer who had sod put in about two years ago (Bermuda) and repaired some spot last winter. Unfortunately, she put in some tall fescue grass in those patches. Now, while it hasn't spread across the whole lawn, it is spreading, slowly. Aside from hoping the summer heat will help the Bermuda kill it off, is there any way I can help eliminate the fescue? Like I said, it's very small at this time, but I'm getting paid to do this, so why not give it a shot.