Fungus Knats

Tippy Toes

We have been infested by fungus knats in our office plants.  I have stopped watering the plants (for about 2 weeks) but this doesn't seem to be working.  Please can someone let me know how to kill the knats and the lavee? Thanks

sotongeoff

This came up a couple of weeks ago and people found this link useful

http://www.bbc.co.uk/gardening/advice/pests_and_diseases/identifier.shtml?black_fungus_gnats

If you dont want to use chemical control sprinkle some vermiculite or something similar over the top of the compost-that creates a barrier so adult flies have nowhere to lay eggs