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Fungus Fly Killer Gel Nematodes


  • Kills fungus/ sciarid fly larvae reducing the number of flies developed
  • Totally natural and safe for plants, humans and pets
  • Unique gel formulation 100sqm pack can be stored up to 12 weeks in a fridge
  • Steinernema feltiae nematodes
  • Two pack sizes 20sqm & 100sqm

SKU: Bio-01-35 Categories: , ,


Fungus Fly Killer nematodes are for the control of fungus fly larvae, also known as sciarid fly larvae. These tiny flies lay eggs in compost or soil that develop into tiny larvae that feed on organic matter and plant roots. In high numbers they can damage young plants and spread soil borne diseases such as pythium. Once they develop into adults they become a nusiance pest forming small clouds of flies when disturbed.


An effective and safe method of control is with the use of the Steinernema feltiae nematodes contained in Fungus Fly Killer. These minute worm like creatures are watered into the compost or soil. The nematodes then seek out and kill the sciarid fly/fungus fly larvae, using the larvae as a reproduction site from which many more nematodes are produced. The nematodes are harmless to humans, wildlife and pets. They provide a safe, natural form of pest control. Fungus Fly Killer nematodes break the life cycle of the fungus fly, so that after a short period of time, there is a dramatic reduction in the number of larvae and therefore a corresponding drop in fungus fly numbers. The nematodes start to work shortly after application.


Fungus Fly Killer should be watered into the compost or soil that plants or seedlings are being raised in. Make sure the compost is moist prior to application and apply with plenty of water to enable the nematodes to penetrate the compost and move through it. Fungus Fly Killer can be applied with a watering can or knapsack sprayer. Repeat applications may be required after 4 weeks to prevent the build up of fresh Fungus Fly larvae. It is also good practice to combine with the use of yellow sticky traps to catch Fungus fly adults.


Fungus Fly Killer nematodes are supplied in two pack sizes:

– Fungus Fly Killer 50 million (*Gel formulation) – treats an area up to 100 square metres
– Fungus Fly Killer 10 million – treats an area up to 20 square metres


Apply the nematodes as soon as possible after receipt or store in a fridge un-opened. * The Gel formulation has a longer shelf life in a fridge of up to 12 weeks.

Additional information

Pack Size:

20 Square Meters (10 million), 100 Square Meters (50 million)


What are my options for shipping and how much will I be charged?

1-3 Working Days Over £50 FREE 2pm Mon-Fri
1-3 Working Days Under £50 £2.50 2pm Mon-Fri
Collection N/A FREE 10am-2pm Mon-Fri

NEXT WORKING DAY* N/A £4.99 2pm Mon-Thurs

*These rates and times do not apply to Bumblebee orders. To find out about Bumblebee orders click here.


Unit 1, Griggs Business Centre | West Street | Coggeshall | Essex CO6 1NT
Tel: 01376 563322


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