Fairy rings are formed from fungal mycellial webs (underground) which are
breaking down something under the ground. You could lift the affected lawn
sodding (including several feet in front of the spreading ring) and remove
the debris. Or, you could just let the ring run its course. Unless the
lawn above it is dying (then it's probably brown spot -- treat with a
fungicide), don't worry about it. It won't hurt anything.
"Dave" wrote in message
news:qd1Jc.43488$Rf.23227@edtnps84...
Hello, neihbours got major fairy rings. Got a couple just starting to show
on my front yard.

I heard that plug aerating can help.

Anyone heard of this?

Thanks in advance, Dave