Apply Nemasys Chafer Grub Killer to moist lawns from August to early October. This is when the young grub larvae are active and the temperature is above 12ºC (54ºF). Each pack of Nemasys Chafer Grub Killer treats up to 500sqm.

Also available in 100sqm packs

Nemasys Chafer Grub Killer must be used within 3-4 weeks of being received.

Best applied up to Middle October

Immediately after applying Nemasys Chafer Grub Killer, 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 Nemasys Chafer Grub killer 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 megidis) 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.

Instructions for garden hose feeder application of Nemasys Chafer Grub Killer

These instructions are applicable to all pack sizes up to 100m² and products in the Nemasys Home & Garden range. However, please note the different application timings in point 4. when applying to lawns.

• Wash the feeder through with water to ensure it is clean.
• Add entire contents of the pack to the bowl of the feeder. Then fill the bowl with water and stir to mix thoroughly. Attach the hose.
• Taking care to keep the feeder in an upright position apply evenly to the whole of the area for 8 minutes using a side-to-side motion to keep the nematodes well mixed. During this time most of the nematodes will have been applied.
• Treat the same area again for a further 8 minutes (or 16 minutes for lawn applications) to apply the remaining nematodes as well as to make sure they are adequately watered in. Applications to lawns require more water to ensure the nematodes are washed through the grass thatch.
• Adhering strictly to the application timings will ensure that any remaining colour in the bowl will be due to inert carrier only and that you have performed an even application.
• This new method provides a simple and effective application, however, it is important to follow the instructions exactly to obtain even coverage.
• Only the following high quality feeders are recommended for use with this method
  • Phostrogen® Handy Feeder
  • Miracle-Gro® Feeder

Phostrogen is a registered trademark of pbi Home & Garden Ltd
Miracle-Gro is a registered trademark of The Scotts Company
Nemasys and Nemaslug are registered trademarks of Becker Underwood

NB: When applying to pots it is still better to use the watering can method as it would be difficult to judge the area and timing.

For advice or further information on Nemasys Chafer Grub Killer, speak to a technical sales advisor on 01902 440250.