Chafer grubs in lawn

My son had them in his lawn last year, used the nematodes, worked well.

The grubs came back this year though!

He has used the same treatment, I assume it has worked again, not asked him yet.

We have had them, left them to it and they vanished.

Are they Chafer grubs or Leatherjackets - larvae of the Crane Fly, they can devastate a newly sown crop but will do little harm to established grass. Chafer grubs are white, Leatherjackets are dark grey/brown.

Definite)y chafe

Sorry, definitely chafers...they are white with a brown head and 6 legs....urgh!!

MissOoops has them - apparently you have to treat the lawn for 5 years as the bugs work their way up to the top in a 5 year cycle. She has contacted the Landlord to see if he will help with the cost of the nematodes, her lawn is just a dry patch of dust and full of holes. Horrid things

Absolutely.....it sounds like we have done all we can for now......it's a big lawn, so hoping the nematodes do their job before we end up with what looks like a ploughed field for a garden. Thank you for your comments.