Core Aeration This is the most common type of aeration used. It involves using a specialty tool to remove small cores or plugs of soil from the soil to alleviate soil compaction. The average cost of core aeration is between $50 to $150 per 1,000 square feet.

Is lawn aeration necessary? Almost all lawns will benefit from aeration, and a great lawn demands it. That said, most lawns do not need it. Lawns suffering from heavy foot traffic, excessive thatch (>1 inch thick) or grown on heavy soils will benefit most.

But if your grass is healthy and thriving and hasn't been impacted by a lot of equipment or foot traffic, it likely doesn't need aeration. Once annually is usually enough in most cases, and for healthy lawns that receive regular maintenance and are performing well, every two to three years may be sufficient.

The best time to aerate lawns in Wisconsin is in early autumn (September 1–30) when grass is actively growing. Lawns may also be aerated in mid- to late spring (May 1 to June 15), but during this period, weed seeds are germinating and aeration may encourage their growth as well.