Aerating and dethatching are key to maintaining a healthy lawn. Aerating is the process of removing small plugs of soil from your lawn allowing air into the soil to support healthy roots. The process also loosens compacted soil allowing the roots to become more active and move more freely through the ground.
Dethatching is also a helpful process. Dethatching helps maintain a healthy top on your grass and allows water and fertilizer to move less restricted to the soil where it can be absorbed into the roots.