Turf grass over time will produce thatch, a layer of organic dead matter (grass clippings, leaves, dead roots, etc) above the top layer of soil. This natural process is good for grass and soil conditions if the thatch layer does not exceed a thickness of over a 1/2 inch. Thatch layers that become thicker than a half inch will create conditions that prevent water, air, and nutrients from infiltrating down to the soil. This will lead to dead grass patches, poor drainage, poor grass root development, and degraded microbial soil health. With the application of lawn core creation combined with composted soil lawn dressing, thatch issues can be reversed by allowing air, water, nutrients, and decomposing microbes to work on breaking down thick thatch. Over time thick thatch can be reduced allowing the soil and roots of the grass access to beneficial nutrients, water, air, and beneficial microbes that support a healthy lawn.