Special offer

Chafer Grub Spring Autumn 100 sqm Offer


Nemasys® Chafer Grub Killer is normally applied in September, but if you have discovered a severe infestation, then you can treat in April as well to get on top of the problem. Order our Chafer Spring/Autumn Offer and we will send 2 x 100 sqm packs separately – the 1st pack will be sent ASAP (or select your own date below) followed by another pack sent AUTOMATICALLY in the Autumn i.e. w/c 12th Sept (or email us an alternative date and we will organise it) and save money off the normal combined price. 

N.B. We also have a Chafer Trap available to target the adult chafer beetles as they emerge i.e. position in May.

Special Offer – Help your lawn recover from a Chafer attack

Select a future w/c dispatch date or leave today’s date for dispatch ASAP * 

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 Nemasys® 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 12c or apply in the autumn (Sept / Oct) as this is when the chafer grubs are the most susceptible to the nematodes. Nemasys® Chafer Grub Killer is effective at killing leatherjackets, but is harmless to children, wildlife and pets and the lawn may be used immediately after application. Apply as follows :-

  • Apply Nemasys® 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. Pre-order for delivery in the autumn.
  • Apply Nemasys® Chafer Grub Killer when chafer grubs are discovered – Nemasys® 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 12c), but you must treat in September as well. Available NOW .

How to apply? – Nemasys® 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 Haws Rose no.14) or use a nematode applicator for larger areas. Nemasys® Chafer Grub Killer 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 larvae and destroy it. Having destroyed the grubs, the nematodes multiply and are released back into the soil to hunt down more chafer grubs.

How is it sent? – Nemasys® Chafer Grub Killer is a perishable, living product, so it is sent out fresh by Royal Mail 1st class post. Being a perishable, living product, 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. 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, EasyNem Applicator, Hose-end Feeder or Nematode Applicator – Add one to your basket and save £1.00 off a Coarse Rose, save £2.00 off a EasyNem Applicator or a Hose-end Feeder or save £3.50 off a Nematode Applicator when bought with your nematodes (savings applied at the checkout).


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