Sportnem Chafer Grub Control


£21.21 ex VAT
£25.45 inc VAT
In Stock

For the biological control of chafer grubs in lawns.


After application, the nematodes actively search for their prey and penetrate them. The nematodes feed on the contents of the prey, excreting specific bacteria from their digestive tracts as they do so. These bacteria convert host tissue into products that the nematodes can easily ingest. The larvae die within a few days. Once the insect larva has been entirely eaten, the nematodes crawl out again to prey on other larvae.


Preparation of the solution

  1. Half an hour before preparing the product, remove the pack from the refrigerator and let it come up to room temperature (20°C)

  2. Break the contents of the sachet (250 million Heterorhabditis bacteriophora) into smaller pieces. Use the entire pack and place the smaller pieces in a bucket containing five litres of water (at 15 to 20°C)

  3. Leave the bucket with the solution to stand for five minutes

  4. Then stir the solution until all the lumps have disappeared before transferring it to the spray tank

  5. Use the spray solution straight away

Application and dosage

  1. Remove all gauze openings of less than 0.3 mm (50 mesh) in order to prevent blockages.

  2. You can use a watering can, backpack spray unit, motorized spraying system, or sprinkler system.

  3. Use as little pressure as possible (max. 20 bar)

  4. Use the contents immediately after preparation.

  5. Apply the solution homogenously over the area to be treated.

  6. Apply the solution late in the evening or early in the morning.

IMPORTANT: Spray the lawn before and after the application of the product with 2-5 litres per m2 and keep the ground moist for a period of two weeks after application.


  • The moisture content of the soil must be high
  • Soil temperature between 14 and 33°C
  • Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight
  • Leaf applications should only be carried out in the evening to minimise the influence of UV light and to maximise moisture availability for the nematodes


Biological beneficials have a very short life expectancy and therefore need to be introduced into the crop as soon as possible after receipt. Failure to do so can have a negative impact on their quality. In case you do need to store Sportnem-H, please follow the instructions below. Koppert Biological Systems is not liable for any loss of quality if the product is stored longer and/or under different conditions than recommended.

Storage instructions

  • Shelf life: see package for expiry date
  • Storage temperature: 2-6 °C
  • Store the product in the original box, properly closed and sealed
  • Store the product away from direct sunlight


Pack coverage: 5000m2

Solution: One box for at least 5000 litres of liquid

Application Period

Chafer grubs: May-October

Weevils: February - June

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