ONE PACK SENT IN SPRING - SECOND PACK SENT IN AUTUMN.
Chafer grubs are the soil-dwelling larvae of chafer beetles. They are creamy coloured with an orange head and are about 1.5 cm in length, they have distinctive legs and will be found in the grass roots.
Nemasys Chafer Grub Killer is a chafer grub treatment containing Heterorhabditis bacteriophora a species of nematodes which controls infestations of chafer beetle larvae naturally, safely, and effectively.
Use Nemasys Chafer Grub Killer to deal with a chafer grub infestation, without any of the precautions associated with chemical use and the assurance that they are 100% safe for children, cats, dogs, other pets and wildlife.
Beneficial nematodes are living organisms, so they must be used before the expiry date (which is marked on the inside of the pack and will be around 2-3 weeks) and should be stored in the fridge until it is applied.
Generally as long as the grubs are near the surface and the soil temperature is above 12ºC (54ºF), nematodes can still be applied.
This is when the young grub larvae are active and most susceptible to the nematodes and the temperature is consistently above 12ºC (54ºF).
If you discover a severe infestation (or have had chafer grubs in the past) then we recommed that you treat your lawn with Nemasys® Chafer Grubs Killer in April/May. If you treat in April/May you should treat in September AS WELL.
The nematodes work in the soil by seeking out the chafer beetle larvae and attack the pest by entering natural body openings. Once inside, they release bacteria (Photorhabdus spp.) that stops the pest from feeding, quickly killing the grub.
The nematodes then reproduce inside the dead grub and release a new generation of infective juvenile nematodes. These infective juveniles then disperse into the soil and search for further prey. If sustained this life cycle can lead to significantly reduced chafer grub populations in subsequent years.
There are a number of Chafer Grub species with varying levels of resistance to Nematodes. The 'Garden Chafer' is the most commonly found chafer grub and is very susceptible to nematodes, but there are other minor species that are more resistant.
If after your initial treatment you continue to have an infestation it is highly likely you have a more resistant strain of chafer, such as the 'Welsh Chafer' or 'Summer Chafer'. It is advised to apply at double strength and more frequently in order to try to combat these grubs however this is still not guaranteed to combat the more resistant strains.
Prior to applying the nematodes:
To avoid desiccation of the nematodes:
Instructions for hose end feeder application of Chafer Grub Killer (100m2)
This new method provides a simple and effective application, however, it is important to follow the instructions exactly to obtain even coverage.
To calculate your area measure the width and length of the area to be treated and multiple them by each other e.g. 5m x 20m = 100 sq.m
Can't see an answer to your question? Please contact us and we will be happy to assist you.