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The Greenkey 30cm Rolling Lawn Aerator is the kind that you fetch if you already have a good lawn but it needs maintenance. The spikes on the unit are not large enough to affect large-scale reseeding. The length of the spikes is wide enough to let in air and water effectively without messing up the aesthetic appeal of your lawn. It is not expensive and with good care, it can serve for long. If you have hard soil or looking to restore your lawn, look for a model with hollow tines.
