When it comes to my lawn, I'm pretty much live and let live. Back when I had a postage stamp sized lawn, I made an attempt to keep the weeds to a minimum and fill in bare spots with grass seed but with a couple acres, it just isn't feasible or desirable on my part. I did seed down the dirt around our new sidewalk and driveway but that was more to prevent mud from being tracked on them than for beauty reasons.
I tell you this to justify telling you that when it comes to insects in my lawn, I let them live if they don't bother me. However, the local flock of turkeys that call my back yard home don't share the same attitude. In fact, they are down right hard on the local insect population. Twice a day, they traverse my yard from one side to the other pecking up insects as fast as they can move their necks. I've watched them grow from young poults into full grown turkeys indistinguishable from their mothers who have herded them around all this time.