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Don't pick up or dispose of aeration plugs. They will break down by themselves in one or two weeks. Rainfall will speed this up, as will watering the lawn. Mowing helps, but don't mow the grass too soon post-aeration. It's unusual that the plugs would remain after three or four weeks, but mowing and raking will break them down by that point.

While your lawn will reap the benefits of core aeration faster than liquid aeration, the liquid solution will last longer and have more cumulative effects. If your lawn is in really bad shape, try both. By creating holes in the soil with the core aerator, you’ll make it easier for your lawn to absorb the liquid aerator solution. You might have to apply the liquid aerator several times during the growing season, but again, the positive results will be more cumulative than with core aeration on its own.

Aerating a newly sodded lawn is generally not recommended immediately after installation. It's crucial to allow the sod to establish itself first, typically over the first growing season. Aerating too soon can disrupt the fragile root systems of the newly laid sod and potentially damage the turf. It's best to aerate prior to laying new sod or wait until the sod has fully rooted and the lawn is stable before considering aeration, usually after the first year.

A manual spike aerator or aerator shoe is a very affordable way to aerate a lawn. Such devices can often be purchased for between $30 and $50. Liquid aerator is another affordable option, but this enzymatic spray may not work as well as actual, physical aeration for helping ease compacted soil and may take several applications.