Fertilizer won't do much good unless it's got room to work. Step on the bridge between the two hollow steel tubes of the Yard Butler Manual Lawn Coring Aerator ID-6C and it will pull out 3.5-inch-long grass plugs, increasing the soil's oxygen level and allowing nutrients to reach the lawn's roots. [$30; yardbutlerstore.com]
Gear of the Year
The best tools, tech, and toys of 2013.
Plus: Lance Armstrong's Downfall
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