The answer to 'aeration dying' is that there are several common causes for lawn aeration issues, including soil compaction, thatch buildup, and drought stress. Symptoms of dying aeration can include bare or thinning patches, standing water, and difficulty penetrating the soil with a screwdriver or core aerator.
In many cases, DIY lawn aeration is a viable solution, but for more severe problems or if you're unsure of the cause, it's best to call in a professional landscaping technician. They can diagnose the issue and recommend the appropriate treatment, whether that's core aeration, overseeding, or addressing underlying soil or drainage problems.