 If you are really sick of your lawn, and I mean sick of it, and really want to change it and be proactive, I would encourage you to kill it all. Now you hear me, kill it all? What do you mean by kill it all? The bottom line is, is that in today's world, we have a really amazing species of turf grass that are much, much better than the ones that we had 20 years ago, or even better, 30 or 40 years ago.