Over time, soil in the lawn area becomes compacted due to normal, everyday foot traffic. Aerating the lawn opens up the soil, to allow air, water and nutrients to more easily reach the root zone of the turf. This service is best performed in the fall when the lawn is actively growing, but not likely to become infested with weeds. Aerating is often done in conjunction with Dethatching and/or over-seeding to maintain a healthy, lush green lawn.