Hey duse.

Sorry to hear about your gnat issues... the biggest reason for getting gnats is over watering.

So here are 3 ways to get rid of them which I use.

First I use pure camomile tea, put 1 - 2 tea bags in a 3 litre pot. Boil the kettle and pour in the boiling water in the teabags. Boil about 2 litres of water.

Let this pot sit overnight to cool off and let the teabags filter. Maybe start on a light mixture with just one teabags to begin as too much chamomile can be harmful to roots.

This is the first attack on the bugs. It attacks the fungus they feed on making it inaccessible to the gnats.

Second, get your hands on some neem oil. Fill your water sprayer with hot water and add 5ml of soap/detergent (biological).
Shake the bottle so the soap is dissolved fully in the water. Then take 5ml of pure neem oil, heat it lightly to make it a liquid, and add it to the sprayer water.
Shake the bottle very well, the soap should allow the neem oil to mix well with the water.

Then spray all over the plants; the leaves, the top soil and the base of the pots. Also make a bucket of the stuff for your next watering/feeding.
The neem oil doesn't kill the bugs straight away. It confuses the insects so the stop procreating, eating, flying and also stop larvae from hatching.
Gnats can live to up to 3 weeks so give the plants one watering with the neem mixture but continue to use the neem spray for up to 3 - 4 weeks.

Thirdly, cover the top layer of the soil in a half inch of sand, be sure the sand is sterile. The gnats won't lay eggs on sand.

That should be it. 100% organic method to kill gnats.
So with these 3 methods you cut off their food supply, stop them laying eggs and also confuse the gnats literally to death.

Take care buddy

S.L.
silent leprechaun Reviewed by silent leprechaun on . Fungus Gnats that will NOT die! Let me know how you deal with em please. Here is the situation: Six plants in six five gallon containers. I (stupidly) used miracle grow potting soil and consequently about a month into my veg grow these fungus gnats started showing up. I ordered Azatrol upon some advice from my local grow shop and it has helped cut down the population but, it just cant seem to get em all gone. I have excellent airflow and only water about every four days at most(sometimes every 5 if soil is damp enough). Plants look great to me and have grown Rating: 5