Soil plugs or cores are pulled from your lawn to reduce compaction, increase drought tolerance, increase disease resistance, break up thatch, and get more nutrients to the turf roots. Core Aeration can be done annually and is one of the best possible things that can be done for a lawn. We recommend mechanical aeration prior to overseeding to promote seed-to-soil contact.
Front lawn vs back lawn of a new construction home. The back lawn had sod laid right on top of clay and will have a very tough time thriving. Core aeration followed by a Soil Improvement Application will do wonders to fix a condition like this.