Core Aeration

It's the best thing you can do for your lawn !
What exactly is Core Aeration?
Simply put it is the mechanical removal of small cores of the soil taken from your lawn using an aerating machine. It is widly agreed that this is the single most important thing you can do to create a healthy thick lawn.
What's the Purpose of Core Aeration?
 Picture the soil under a healthy lawn. It's a soil studded with networks of air pockets. Oxygen travels through these pockets, and that's important: Just because grass roots are underground, that doesn't mean they don't have to breathe! But it's more than just oxygen that must percolate down through the ground, as your grass roots also need water and whatever nutrients you are supplying when fertilizing lawns. There's a veritable beehive of activity going on down there under a healthy lawn!

Here's A Specific Example of Where Core Aeration Can Solve a Lawn Problem

Many people complain about having moss plants growing in their lawns, and they'll proceed to wage a campaign against the moss, thinking that all that is needed is to apply the correct herbicide. This is a misguided policy. Lawns that drain poorly due to compacted soil and/or thatch might just as well be displaying a sign that reads, "Moss Welcome." Compacted soil is a common problem for lawns subjected to excessive foot traffic (as when kids play on the lawn frequently).