When our home was built, the contractor laid sod over a mostly clay yard. In our first few years of trying to keep the yard up ourselves, it was a major battle; there were areas where it was too dry / hard, other areas that were swampy, and then a few spots where grass was okay. A neighbor hired Reliable Lawn Care, and they quickly had the best yard in the neighborhood. Within a couple of years about 8 of the 11 houses on our street were using Reliable Lawn Care, and we've all been extremely happy with the results. Lush, health, even (consistent) grass from corner to corner. We also use their spring and fall clean-up services, and we've been extremely happy with the results.