I have had to pick the grubs out of the lawn and feed them to the birds up until now! These nematodes are brilliant. Mr G from Essex.
Dear all, I applied your treatment for leather jackets in the autumn and the result, a lawn that looks like a lawn! thanks. Regards Trevor Godwin

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Green Gardener - the natural way to keep your garden looking good
Nemasys Leatherjacket Killer - Leatherjackets are the larval stage of the crane fly / daddy long legs & they can quickly devastate a lawn. They lay their eggs into the same piece of lawn each year, so an infestation can quickly escalate from a small brown patch to a full scale infesation. Birds (especially starlings) pecking at the lawn is another sure sign of an infestation.


Control Leatherjackets NATURALLY by applying Nemasys Leatherjacket Killer as soon as you discover grubs or apply when the grubs are at their most destructive i.e. in the autumn (September). Available NOW.


"The nematodes you advised for leather jackets on the lawn last year was very effective, Thank you." K Iris Millar

Repel pests naturally

Grazers - 750ml RTU Spray treats 30sqm£9.99Add Grazers - 750ml RTU Spray treats 30sqm      
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Grazers - 375ml treats 1000sqm£13.50Add Grazers - 375ml treats 1000sqm      
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Outdoor Pest Repeller£22.50Add Outdoor Pest Repeller      
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Special Offer - Outdoor Pest Repeller and a Main Adaptor and save £5.00£32.49Add Special Offer - Outdoor Pest Repeller and a Main Adaptor and save £5.00      
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Outdoor Pest Repeller Mains Adaptor£14.99Add Outdoor Pest Repeller Mains Adaptor      
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FOXWatch Fox Repeller£54.50Add FOXWatch Fox Repeller      
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FOXWatch 12v Main Adaptor£19.95Add FOXWatch 12v Main Adaptor      
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Special Offer - Buy a FOXWatch and a 12v Main Adaptor and save £5.00£69.45Add Special Offer - Buy a FOXWatch and a 12v Main Adaptor and save £5.00      
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Nite Eyes£24.95Add Nite Eyes      
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A range of natural treatments, traps, pest repellers and ultrasonic repellers to repel a range of garden and house pests, which are safe for you, your pets and children PLUS they repel the pests WITHOUT harming them.


Grazers repels rabbits, deer, pigeons and geese - Grazers is a liquid which is sprayed onto the foliage of any growing plant, where it is taken up by the plant making the foliage unpalatable to grazing animals. This nutrient based spray can be sprayed safely on ornamental plants, shrubs, bedding plants, fruit, vegetables and lawns. As well as protecting the foliage, the nutrients in the spray help the plant heal itself and repair any damage already caused by grazing. It is odourless to humans and is safe for children, pets and wildlife. It can be sprayed at any time of year, but is most effective when sprayed on new growth. You can also spray new plants BEFORE planting them in the garden. 750ml Ready to Use Spray treats 30 sqm and the 375ml concentrate treats 1000 sqms of garden.

Outdoor Pest Repeller - This updated version of our best-selling Pestclear Outdoors uses ultrasonic technology to clear the garden of unwanted visitors including rodents, birds, cats, dogs, foxes, badgers, deer and Rabbits WITHOUT harming them. The Outdoor Pest Repeller is inaudible to us, is safe and effective and will NOT affect fish. The motion detector detects movement up to 15m from the unit, which triggers a burst of powerful ultrasound, harmlessly scaring the intruder away. Site the unit on a wall, fence, post or tree (mounting post and bracket included),so the sensor can detect pest movement in a 60 degree "arc" over the garden. The Outdoor Pest Repeller can be battery powered (2 x 9v batteries) or run from a mains adaptor (available separately). Special Offer - Buy a Outdoor Pest Repeller and a Main Adaptor and save £5.00.

FOXWatch Fox Repeller - Use the FOXWatch Fox Repeller to stop foxes damaging your home and garden, killing your pets and wildlife and disturbing your sleep at night. It is made in the UK and comes with a 2 year warranty. FOXWatch will repel foxes up to 12m's away making it ideal for use in smaller / urban gardens - it can protect a total area of 125 sqms. Site the fox repeller facing the area you want to keep clear of foxes and when the passive infra-red sensor detects movement of the foxes body heat, it emits a unique ultrasonic alarm (which is inaudable to humans) to repel foxes. The longer the unit is in place, the more effective it is. No effect on garden wildlife - most animals like ourselves cannot hear the Foxwatch alarm, this includes birds, frogs, hedgehogs and rabbits. It can be either or mains or battery powered - it is 30% more powerful when run off the mains, so it recommended that it is run from an adaptor where power is available.


Nite Eyes - Repel Foxes and Badges with Nite Eyes as featured on BBC's Country File -This solar powered unit repels both foxes and badgers by mimicking the eyes of a predator. The solar powered unit charges by day and then comes on automatically at dusk (it automatically turns off again in the morning and starts charging again). Once it comes on , the two red LED lights in the front start to flash and it is this flashing of the lights that stops the fox / badger. Nite Eyes do not harm the animals, but they will feel threatened, because they believe the flash to be the eyes of another animal and it is this sense of being watched that the animals do not like so they turn tail and run away. Nite Eyes will not harm wildlife or domestic pets / poultry. The units are maintainance free, measure 10cm x4.5cm x 2.5cm and are fully weatherproof.


Solar Moler - Mole chasers are normally battery operated so as the battery runs down you're never quite sure if they are working! This one is solar powered - the ultimate environmentally friendly power source, so no more batteries! Powered by a small solar panel, it emits a discreet noise underground that the mole can hear. Being inquisitive the mole is initially attracted to the noise, but after a few days it will become increasingly irritated and move away. Simply pushes into the ground so can be easily moved around the garden driving the moles away. One Solar Moler treats over 600sqm/750sqyds.

Nemasys Leatherjacket Killer

Large Leatherjacket Killer treats 100 sqm - despatched ASAP£21.75Add Large Leatherjacket Killer treats 100 sqm - despatched ASAP      
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Eco Leatherjacket Killer treats 500 sqm - despatched ASAP£79.50Add Eco Leatherjacket Killer treats 500 sqm - despatched ASAP      
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Haws Rose no.14£6.75Add Haws Rose no.14      
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Hose-end Feeder£13.50Add Hose-end Feeder      
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Nemasys® Leatherjacket Killer - Leatherjackets are the larval stage of the crane fly or daddy long legs and they can quickly devastate a lawn. Control leatherjackets naturally by treating with Nemasys® Leatherjacket Killer when they are discovered (and the soil temperature is 10c) or apply when they are at their most destructive i.e. in the spring (April) and in the Autumn (Sept/Oct).


N.B. Nemasys® Leatherjacket Killer is a perishable product (it will keep for 2 weeks in the fridge), so please order when you are ready to apply


Leatherjackets - Crane flies or daddy long legs lay their eggs in the same area of lawn from which they emerge, so numbers increase rapidly. These eggs hatch in August / Sept and the larvae immediately start to feed on the grass roots. The leatherjackets will feed though the autumn, before overwintering. They start feeding again the following spring and gorge on grass roots before pupating to emerge as adults in August. The symptoms of an attack are that grass growth slows and yellow patches appear PLUS the grass easily pulled up with little or no root growth. One of the biggest indicators of an infestation are birds, particularly starlings, which will pull at the lawn (causing even more damage) in search of the leatherjackets to eat.


Leatherjackets - In August, customers report clouds of daddy long legs emerging from lawns in early morning leaving behind the casings sticking up in the lawn (see left). As the daddy long legs emerge, they start to lay their eggs back in infected lawns starting the whole cycle again - the next generation of leatherjackets hatch within 2 weeks. Leatherjackets are up to 2.5cm / 1" long, greyish black in colour, legless and with no distinct head. Late autumn when the leatherjackets are newly hatched, close to the surface and the soil is warm is when the leatherjackets are the most susceptible to the nematodes.


Nemasys® Leatherjacket Killer - Control leatherjackets naturally by applying Nemasys® Leatherjacket Killer containing millions of nematodes (Steinernema Feltiae) to the infected lawn as soon as the leatherjackets are discovered (and the soil temperature is 10c) or when the leatherjackets are active i.e. in the autumn (Sept / Oct) and in the spring (April). Nemasys® Leatherjacket 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® Leatherjacket Killer in September/October - This is the ideal time to treat as the soil is warm PLUS the leatherjackets are newly hatched and are the most susceptible to the nematodes, so if you have had leatherjackets in the past or have discovered a leatherjacket infestation or your neighbours are infested and you want to keep them at bay, treat in September/October. Available NOW.
  • Apply Nemasys® Leatherjacket Killer when leatherjackets are discovered - Nemasys® Leatherjacket Killer is normally applied in September as this is when the leatherjackets are newly hatched and most susceptible to the nematodes, but if you have discover leatherjackets (not daddy long legs) at any other time of year i.e. in the spring/summer then treat at double strength as the mature leatherjackets are much harder to kill, but you must treat in September as well.

Nemasys® Leatherjacket 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. To apply, simply mix the nematodes with water and apply with a watering can or hose-end feeder PLUS economy packs can also be applied with a sprayer. Once applied the nematodes will seek out the leatherjacket larvae. On contact they enter the larvae and destroy it. Having destroyed the leatherjacket ,the nematodes multiply and are released back into the soil to hunt down more leatherjackets.  Nemasys® Leatherjacket 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 to 4 packs will go through your letterbox and are fine on the doormat while you are at work. N.B. Large orders i.e. 5 or more packs will not fit through the letterbox, so someone will need to be in to receive it. For smaller lawns just make solution stronger - you can't overdose!


Nemasys® Leatherjacket Killer Large Pack - treats 100 sqm in the autumn - £21.75

Nemasys® Leatherjacket Killer Economy Pack  - treats 500 sqm in the autumn - £79.50


"Hi Jon, I keep on forgetting to drop you a line, but I wanted to tell you how good that leatherjacket treatment was. My grass is looking lush again. A bit more rain in recent weeks has helped as well but it is green with no starlings attacking it any more!" Cheers Simon

"The leatherjacket treatment which I got from you for the lawn previously was a great success - thanks!" from K Iris Millar by email


"Dear all, I applied your treatment for leather jackets in the autumn and the result, a lawn that looks like a lawn! thanks" Regards Trevor Godwin


"Hello Jon, this is just to let you know how pleased we are with the leatherjacket control. We applied the nematodes according to the instructions and the brown patches on our lawns have definitely stopped spreading. The fresh grass is already growing. We also used your autumn lawn feed and the benefit is apparent. Last year we helplessly watched as our lawns were mutilated. This year we have been able to fight back. Thank you, from two keen gardeners." Brenda and Cyril.


"Just to let you know we now have a green lawn again – so thank you!" Kind regards Philip 


"Dear Jon, I have 2 lawns but every summer they went mostly patchy yellow and looked half dead and straw like, despite using fertiliser and watering in dry spells. No one could help and then we came across your site and read about leatherjackets. I decided to try your nematodes. I admit I thought it all was a lot of nonsense!! How wrong I was. To my amazement this year both lawns are lush and beautifully green - I find it hard to believe ! Thank you for lovely grass again. I feel that your nematode treatment should be more widely known and written about by gardening column writers to say nothing of books." Many thanks again Derek Wallace

"Thanks for your speedy answer to my questions about the Leatherjacket killer. It is a great product that certainly saved my increasingly ravaged lawn, this year it looked better than it had in ages." Regards Tony


Nemasys® Leatherjacket Killer application methods Nemasys® Leatherjacket Killer is easy to use. Simply mix the harmless powder with water & apply directly to the lawn with a watering can fitted with a rose or a hose-end feeder PLUS Economy packs can be applied with a sprayer. Use the whole pack before the expiry date, which is marked on the inside of the pack and will be at least a couple of weeks.

Haws Rose no.14 Rose - Watering cans need to be fitted with a coarse rose to allow the nematodes to flow freely. We recommend using the Haws Rose no.14, as not all roses are suitable.


Hose-end feeder - Used for applying nematodes to large areas i.e. ideal for applying economy packs to large lawns. This feeder can also be used for applying liquid feed to plants and lawns. Attaches via standard hose-pipe connector and features both a rose head and jet spray as well as an on / off switch for water flow.

Lawn Pest Pack

Lawn Pest Pack treats 100 sqm - despatched ASAP£47.75Add Lawn Pest Pack treats 100 sqm - despatched ASAP      
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Eco Lawn Pest Pack treats 500 sqm - despatched ASAP£169.45Add Eco Lawn Pest Pack treats 500 sqm - despatched ASAP      
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Lawn Pest Pack - Many people struggle to identify, which pest their lawn has i.e. either leatherjackets or chafer grubs. If in doubt, you can treat with BOTH Nemasys Leatherjacket Killer AND Nemasys Chafer Grubs Killer at the SAME TIME. Control leatherjackets and chafer grubs by treating when they are at their most destructive i.e. in the Autumn (NOW). 


Lawn Pest Pack - The symptoms of a Chafer Grub and Leatherjacket attacks are very similar i.e. grass growth slows and yellow patches appear PLUS the grass easily pulled up with little or no root growth. If possible, identify which pest you have and then treat with the relavent control, but if this is not possible then you can now treat for BOTH at the same time. Simply mix the TWO different nematodes (Nemasys Leatherjacket Killer AND Nemasys Chafer Grubs Killer) together and apply to the lawn AT THE SAME TIME.


Lawn Pest Pack - treats 100 sqm - £47.75 saving £5.00 - despatched ASAP

Lawn Pest Pack Economy - treats 500 sqm - £169.45 saving £10.00 -  despatched ASAP