Target fungus gnat larvae in the growing medium with live Steinernema feltiae. This listing is for a 2-million nematode pack, for use around affected houseplants, seedlings and other suitable container plants.
SF nematodes act on susceptible larvae in the soil. They do not kill the adult flies already flying around your plants. Yellow sticky traps can help monitor adults while you treat the larvae and review watering.
Check coverage before you buy
The listed coverage for this pack is up to 4m² of soil surface, equivalent to 500,000 nematodes per m². Count the treated soil area rather than assuming every pot is the same size. Plant count, infestation and growing medium can change the required dose; follow the instructions supplied with your pack.
Need a larger quantity? Ask TerraSoil about current batch sizes and availability before ordering. Other pack sizes are not selectable on this listing.
Apply to moist growing media
Check the pack's use-by date, storage instructions and suitable application conditions.
Moisten the growing medium before treatment without waterlogging it.
Mix with the water quantity specified on the pack, keep the suspension stirred and apply promptly and evenly.
Avoid direct sunlight and overheated pots. Keep the treated medium appropriately moist for the period stated in the supplied instructions.
Do not store the mixed suspension. Check compatibility before combining nematodes with other pest-control products. Follow the supplied batch instructions for storage temperature and dilution.
What to expect
Results depend on correct pest identification, live product handling and growing conditions. Existing adults may remain visible after treatment; monitor activity and ask about repeat treatment if the problem continues.
For collection or delivery timing and help with coverage, email TerraSoil. Include your pot sizes or growing area and when you plan to apply the treatment. You can also browse our pest-control range.
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