Green Gardener Chafer Killer 100 sqm

(15 customer reviews)


Quantity Price
1 £29.99
2+ £27.99
4+ £24.99

Chafer grubs are the larvae of chafer beetles and they can quickly devastate a lawn. Control chafer grubs naturally by treating with Green Gardener Chafer Grub Killer containing millions of natural nematodes. It is best to treat in the Autumn (Sept/Oct) when the chafer grubs are newly hatched as they are the most susceptible to the nematodes PLUS the soil is warm (the treatment needs a soil temp of 12°c) and the grubs are close to the surface. HOWEVER you can treat at any other times of the year i.e. in the spring/summer, but the mature chafer grubs are much harder to kill, so you must treat in September as well. This pack of Green Gardener Chafer Grub Killer treats up to 100 sqm. N.B. Available NOW or pre-order for the spring / Autumn by inserting a date below.

Special Offer – Help your lawn recover from a pest attack by applying Root Success Fertiliser – Add Root Success for £11.00 saving £1.50 off the combined price (saving applied at checkout).
N.B. Need a Coarse Rose, NemaCan Watering Can, EasyNem Applicator or Hose-end Feeder  – Add one to your basket and save £1.00 off a Coarse Rose OR save £2.00 off a EasyNem ApplicatorHose-end Feeder or NemaCan when bought with your nematodes (savings applied at the checkout).

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Full Description

Chafer GrubsChafer Grubs – Chafer Grubs are creamy coloured, approx 1.5 cm in length, have distinctive legs and will be found in the grass roots. Chafer grubs attack the grass roots causing the grass to yellow. Sampling your lawn to identify the pest – inspect discoloured areas of lawn by cutting a 6″ X 6″ section of turf on three sides and peeling back the sod. Examine the upper 2 inches of roots for white grubs. Shake the sample or probe through the soil with knife or screwdriver to dislodge the grubs. As the grubs will not be distributed evenly, examine other parts of the lawn to find out the extent of the infection. Spotting the adult chafer beetles will help you to identify the pest responsible for the damage, BUT always inspect the lawn for the grubs to be sure. Birds (magpies and crows), foxes &/or badgers attacking the grass in an attempt to eat the grubs will cause even more damage and is often the 1st indicator of a chafer grub infestation.

Adult Chafer BeetlesAdult Beetles – The Garden Chafer Beetle emerges in May/June from the lawn to mate before laying eggs in the lawn from where it has just emerged. These eggs hatch to produced chafer grubs. The eggs are often laid in the same place each year so the problem gets progressively worse. The Chafer Grubs feed on grass roots from July until late Autumn before burrowing deep into the ground to pupate. They are a source of food for large birds-crows and woodpeckers as well as foxes and badgers. These may do more harm to your lawn by ripping it up to get at the grubs. The Chafer Grubs then lay dormant during the winter deep in the ground before moving to the surface the following spring to emerge as beetles in May / June and starting the process again.

Control chafer grubs naturally by applying Green Gardener Chafer Grub Killer containing millions of nematodes (Heterorhabditis bacteriophora) to the infected lawn as soon as the chafer grubs are discovered and the soil temp must be 12°C or apply in the autumn (Sept / Oct) as this is when the chafer grubs are the most susceptible to the nematodes. Chafer Grub Killer is effective at killing chafer grubs, but is harmless to children, wildlife and pets and the lawn may be used immediately after application. Apply as follows :-

  • Apply Green Gardener Chafer Grub Killer in September/October – This is the ideal time to treat as the soil is warm PLUS the chafer grubs are newly hatched and are the most susceptible to the nematodes, so if you have had chafer grubs in the past or have discovered a infestation or your neighbours are infested and you want to keep them at bay, treat in September/October. Order for delivery in the Autumn.
  • Apply Green Gardener Chafer Grub Killer when chafer grubs are discovered – Chafer Grub Killer is normally applied in September as this is when the chafer grubs are newly hatched and most susceptible to the nematodes, but if you have discover chafer grubs at any other time of year i.e. in the spring/summer then you can treat during the year (and the soil temp is 12°c), but you must treat in September as well. Order for delivery in the Spring.

How to apply?Green Gardener Chafer Grub Killer is easy to use. Simply mix the harmless powder with water & apply to the lawn using a watering can fitted with a rose (we recommend the Rose no.14) or use an EasyNem Applicator for larger areas. The nematodes should be applied to a moist lawn (we recommend pre – watering) on a dull day or in the evening. After application you MUST wash the nematodes into the lawn by watering heavily with a hose or a sprinkler. Once applied the nematodes will seek out the chafer grubs and on contact they enter the grub and start to destroy it. Over the next 3-5 weeks the nematodes feed and multiply inside the grubs, so that once the grub dies and decomposes, the nematodes inside are released back into the soil to hunt down more chafer grubs.

How is it sent?Green Gardener Chafer Grub Killer is a perishable, living product, so it should be ordered when you are ready to apply. It must be used before the expiry date (which is marked on the inside of the pack and will be at least 2 weeks) and it must be stored in the fridge until it is needed. Once opened, the contents do not keep, so it must be used in one day – do NOT store the made up solution or powder. They are sent by 1st class post and 1 or 2 packs will go through your letterbox and should be popped in the fridge as soon as possible – they are fine on the doormat while you are at work.

N.B. Need a Coarse Rose, NemaCan Watering Can, EasyNem Applicator or Hose-end Feeder  – Add one to your basket and save £1.00 off a Coarse Rose OR save £2.00 off a EasyNem ApplicatorHose-end Feeder or NemaCan when bought with your nematodes (savings applied at the checkout).


  1. Caroline (verified owner)

    Green Gardener are fab. I use their nematodes to control chafer bug very successfully In my lawn. I am trying the biological control for leatherjackets for the first time this autumn. I recommend this company to all my clients.

  2. Anonymous (verified owner)

    I purchased nematodes to combat a chafer grub infestation. The package arrived on time and was well packed, plus they did the job. I’m very pleased with the service and will use annually to protect the lawn.

  3. Anonymous

    I have never used this product but wanted to know if the reviews are reliable. I guess if it is published they probably aren’t!

    • Jon

      Thanks for the message and they are all real. Genuine customers who I do try and reply to. What product are you interested in? Kind regards Jon @ Green Gardener

  4. Anonymous (verified owner)

    Prompt dispatch of my Nemasys Chafer Killer. Well packaged and with clear instructions on how to use the product.

  5. Mary Clampin (verified owner)

    Excellent service just hoping it does its job of killing off the grub.

  6. A very happy Scott (verified owner)

    Please could you pass on my thanks to Jon Manners because our issue with chafer grubs has finally been sorted following his suggestion when we spoke a few weeks ago. The crows did a lot of damage as you can see from the photo although I’m relieved we can now look forward to a healthy lawn once again. Have a good weekend.Kind regards A very happy Scott

  7. Scott Marshall (verified owner)

    I cannot praise Green Gardener enough. I had a big problem with my lawn and Jon Manners, the owner of this company took the time to speak to me on a number of occasions. He diagnosed the issue and told me how to treat it. Not only was Jon incredibly helpful but so was every other member of his team, including Phyllis. I will be a long-term customer of this business.

  8. Margaret Beadle (verified owner)

    Prompt delivery of chafer grub killer. Good product. We have used it before and would recommend it.

  9. Helen Wood (verified owner)

    Excellent service was received. The product arrived on time and had very clear instructions with it. A very happy customer will definitely be purchasing from Green Gardener again. Thank you.

  10. Anonymous (verified owner)

    The purchase went smoothly We have had great success with the treatment for the chafer grubs.

  11. Steve Troke (verified owner)

    Never thought I would get so excited about Blasted Chafer Grubs and Leatherjackets! The Mother in Laws Lawns have been devastated this year and completely at a loss at what to do. We contacted Green gardener and How initially helpful they were was a real eyeopener. Pure advice as to what to look for and then again how to treat ourselves. Not thinking things could get any better, I ordered our goods during the Easter break. 1st day after, I phoned just to see what the expected delivery date would be , so as to allow me to plan ahead. Again , really honest helpful, helpful answers. May be Wed or Thur. They also actually phoned back that same day to say goods had been shipped. Thee goods following morning and now My Work Begins. Finally, the way this Company has handled every aspect of our journey to Date, I have No Doubt the future is Bright. Here`s Hoping our little Army of Nematode`s will do their Magic. Thank you everyone at Green Gardener, especially the Lovely Lady taking our calls.

  12. Paul Russell (verified owner)

    This review relates to an order for Chaffer Grub Nematodes. I received the product within 2 days of the order and my follow-up query about its application was dealt with promptly and courteously. Initial indications are that the product has had a beneficial impact.

  13. Anonymous (verified owner)

    This is the first time that I have dealt with green gardener. The product I ordered was promptly delivered and, what is more, did exactly what I wanted it to do to clear my lawn of a grub attack.

  14. STEVAN BROUGHTON (verified owner)

    Product I bought arrived as stated. I needed advice on how to use it, and telephone advice was professional and freely given, so all in all, would and will use Green Gardner again. Thank you.

  15. Karen Beaumont (verified owner)

    I purchased the Chafer grub killer for our lawn and it was delivered promptly. We have had this problem for 2 years which was getting worse. We have used it this autumn following the clear instructions. So far so good 🤞

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