This product saved my sod last year! We had kind of a busy summer - building a fence out back ourselves, other building projects going on (covered sandbox, raised garden beds), made over a laundry room, and I was in training for a half marathon. The grass, sadly, got neglected. Our house (and grass!) is only 2 years old, so the first summer we didn't really have to do much to the grass to keep it looking good. This made me complacent...
All of a sudden the grass started dying. We were INFESTED with grubs and those little Japanese beetle things. Gross, unsightly, and potentially causing thousands in damage. No thank you. We live on a large corner lot with most of the corner being lovely grass on display to the neighborhood... having it all die was unacceptable! I researched a bit and found this to be a highly recommended product. Was able to order online for much cheaper than my local hardware store (sorry local businesses...! I support them generally if they are only a little more, but in this case they were almost double the cost.) and it came quickly. Within a couple of days, the beetles were gone. Hurrah!
That just revealed all the SLUGS we had... but that is a story for another post. If your lawn is getting patchy and you have been watering it adequately, try this stuff out. It just might save you the cost of new sod or reseeding. :) I will be reapplying this stuff religiously every year, earlier than August though, to catch the grubs while they are still grubs and not full grown flies (who have eaten their way to life through my precious grass).