Core Aeration removes small cores of soil from your lawn. This helps to de-compact soil and allow water, air and nutrients to penetrate deeper into the soil, which results in improved root growth and improved soil conditions. The plugs of soil are left on the surface of the lawn to decompose. Over time they are incorporated back into the lawn, and nutrients are reabsorbed into the soil. Core Aeration when paired with overseeding can help increase the germination of the seed. Even the best lawns benefit from annual overseeding which will help to thicken your lawn over time. Includes: Using an aerator over the entire lawn to remove cores. Applying overseed over lawn **Overseeding is not designed to repair large, damaged areas or for planting a new lawn but to slowly introduce new grass species into your existing lawn to make it hardier and more drought resistant.