Thanks Fabian we know about the chemical side.
Stewy does “eave patrol” around the place every morning. Mongrel things lay eggs on any smooth surface like garage doors, smooth plant leaves, outdoor light fittings etc
Stewy is a very experienced master gardener. He is renowned for our lawn. Real estate guys say street appeal plus plus.
We went away for 3 weeks and normally the lawn just needs a good mow and tidy up.
We cried when we turned corner and saw a very overgrown lawn. People were almost holding vigils as they thought we had died!! No car, no caravan and it looked deserted and unkempt.
There had been a massive amount of rain and a lawn that was perfect nourishment for a a march of army worms. They will always go for the best lawn.
I ended up finding a guy who has a degree and consults for turf clubs and golf courses. He came to have a look and chat about things.
He reassured Stewy that his recovery plan would be good. He also sprayed extensively with commercial grade insecticide. This has worked very well and reduced the numbers to zero.
Fertilise, water like buggery and pray. Sort bindis and weeds done. It has greened up day by day.
I will throw up some pics later.