can help relieve soil compaction, allowing your grass to grow deeper roots and make better use of water and fertilizer. Walking, playing and mowing will compact soil and stress lawns. Raindrops and irrigation further compact the soil, reducing large air spaces where roots readily grow. Compaction is greater on heavy clay soils than on sandy soils, and it is greatest in the upper 1 to 1 1/2 inches of soil. Aerating is easiest on you and your lawn when your soil is moist from irrigation or rainfall the day before.
Golf fairways, sports turf and municipalities may need three to five times per year depending on the amount of use. Again, turf responds best when tine spacing is closer and penetration is deeper.