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Why aeration?
Overtime your yard's soil can become hard and compacted making it hard for young roots to penetrate. Additionally, this compactions make the flow and transference of water, minerals and air to roots more difficult. Older roots can sometimes sustain themselves, but turn dark and dingy over seasons. New growth needs aeration. Aeration each season will provide a chance for young roots to take hold and give you young fresher looking blades.