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Please Note: Nemasys Chafer Grub Killer will be available from W/C 10/04/2017
Kills the chafer grubs under the lawn. Apply during August and September. As with all our Natural Pest Controls, your lawn is safe to use throughout, there's no need to keep pets and children away.
Use Nemasys Chafer Grub Killer to deal with a chafer grub infestation, without any of the precautions associated with chemical use, such as excluding children and pets from treated areas until dry or the question of what to do about grazing pets, such as rabbits and guinea pigs.
Apply to moist lawns during August and early October. This is when the young grub larvae are active and the temperature is above 12ºC (54ºF).
Immediately after applying the nematodes, water the grass well so the nematodes are washed into the soil to reach the roots where the chafer grubs will be. Make sure the lawn does not dry out after applying nematodes. Keep the lawn well watered for at least two weeks.
Do not apply too late, since the grubs start to move down deeper in the soil and become inactive until the following spring. However, as this move downwards is temperature dependent, in some years it may still be alright to apply later.
As long as the grubs are near the surface and the soil temperature is above 12ºC (54ºF) nematodes can still be applied.
The nematodes (Heterorhabditis sp) seek out the chafer grubs and attack the pest by entering natural body openings. Once inside, they release bacteria that stops the pest from feeding, quickly killing the pest. They do not stop there. The nematodes reproduce inside the dead pest and release a new generation of hungry infective nematodes, which disperse and search for further prey.N.B. The garden chafer is the most commonly found CHAFER GRUB and is very susceptible to nematodes, but there are other minor species e.g. Welsh and Summer Chafer which are less susceptible, so if you have treated and the grubs are still active after 4-6 weeks, please contact us at email@example.com for advise on what to do next. If you are looking to treat a large area, please seek advise 1st on trying to identify which species you have.