Core aeration, spike and liquid aeration are the most common methods used on lawns nowadays. The first one, core aeration, is the most famous ones, being used for heavily compacted earth.
For treatments, spike aeration method is used as it guarantees an optimal absorption. Finally, the best method to cover the entire lawn, liquid aeration method is most common.
Aeration is one of the most important processes you must take into consideration when looking for lawn improvement as it guarantees the health of your lawn.