Dr. Hydro Fungus Gnat protection media drench.


Dr Hydro Fungus Gnat Root Drench is a plant-safe soil sterilant that instantly kills fungus gnat maggots! You can then catch the flying adult gnats with sticky traps positioned close to the growing media. 
The product is highly reactive, but breaks down to plant-safe nutrients after just a few hours of application. For this reason, it is authorised for use on organic crops. This product has a strong odour 
reminiscent of ‘rotting eggs’, but this quickly disperses. Ensure adequate ventilation when using in enclosed spaces (greenhouses, polytunnels, indoors).


  • When mixing and spraying use suitable face masks, eye shields, gloves, coveralls and footwear. FACE MASK MUST BE FITTED WITH A TYPE B FILTER.
  • For best results allow the growing media to dry down for two days before applying.
  • Add 50mL of the concentrate to one litre of tap water. Add to a watering can and drench the surface of the growing media. Apply enough diluted product to saturate the growing media. For complete control apply again 7-10 days later (to kill any eggs laid after the first application).

Safety Data:

  • Do not apply as a foliar spray. Do not store diluted product. Never mix with anything other than tap water.
  • Suitable for use on organic crops; covered by EU Regulations (EC) No 889/2008. Store out of direct sunlight and away from extremes of heat (4-30°C).
More Information
Product NameDr. Hydro Fungus Gnat protection media drench.
ManufacturerDR. HYDRO
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Steel Roots Garden Supplies operates within the distance selling regulations. You may cancel your order & return your items to us for a full refund under the following conditions:
  • The goods have been delivered to your provided delivery address for up to 14 working days (dis-count weekends & UK national holidays) after the day delivery take's place.
  • Goods must be in their original condition, unopened & ready for resale by us. (FULL RETURN INFORMATION).
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