Posted: 12/12/2015 at 15:56
It is a common,,very common, problem Chris. Birds pecking is often a clincher.
for chafers snd leatherjackets you can cover an area with black plastic...watering beforehand is recommended....and leave overnjght. Check next morning. It's not something I have done but it is supposed to work.
Crane flies are ....obviously...part of the equation Chris.
I,think I recall reading that crane flies like to lay eggs in preferred area of the lawn year on year....maybe your lawn is a preferrred site. Here the damage occurred more densely on one side of the lawn.
why not try nematodes next August/September Chris.......not sure spring is ideal time for leatherjackets Dave. Think they prob have gone by then