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Lawn grubs - nemetodes or other remedy

Hi all.
Has any one got any advice on using nemetodes or some kind of washing up liquid for treating grubs in the lawn? I know sounds daft but some one once told me that nemetodes arent all that great, pour some diluted washing up liquid over the surface of the lawn to kill off chafer grubs and leather jackets?

Also for using either nemetodes or any other remedy, should i just target affected areas or is it better to cover the whole lawn as i am sure the little bugers are everywhere and don't really want to wait until its too late and i have even more horrible bare patches to deal with?

Any advice on this would be great.


  • Fran IOMFran IOM Posts: 2,561
    Any advice available?
  • PosyPosy Posts: 3,601
    I understand nematodes work but only when the soil temperature is ok. I haven't heard of washing up liquid as a solution. It might do more harm than good. See what others say.
  • DovefromaboveDovefromabove Posts: 86,025
    edited October 2018
    I wouldn’t use washing up liquid ... whatever it does it will be indiscriminate and will damage the ecosystem in your soil. 

    Nematodes are selective and target the chafer grubs.  Early October is a good time to apply ... get on with it!  :)

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

  • FairygirlFairygirl Posts: 53,924
    Please don't use washing up liquid. Even 'mine' [ ;) ] isn't the right thing, for the reasons Dove gives.
    This is the right time for those nematodes - whichever kind you have in the grass. Goodluck with it. We're lucky here , we don't generally get troubled by them. Despite loads of crane flies, the larvae don't seem to survive.
    It's a place where beautiful isn't enough of a word....

    I live in west central Scotland - not where that photo is...
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