This procedure is becoming better known and utilized because it is effective in loosening compacted soil and clay. Doing this helps control and prevent water run off, dry spots and certain diseases. Fertilizer and water can get to the roots of the grass and begin to work systematically. We use core aerators that pull round plugs of dirt from your lawn. We leave those plugs so that they can be dissolved back into the ground. Aerating 1 to 3 times per year will help your lawn. If you want us to mark your sprinklers ahead of time, we will gladly do it.