Once you've got serious problem like this, it is hard to control,
especially larves in soil.
But try to use Pestrap (http://www.hummert.com/catalog.asp?P=13861).
1. clean every thing out of chamber when you finish experiment and keep
empty in 40 degree, low humidity for 4-5 days.
2. make sure to close the door tightly every time to keep flies getting
hope these work for you
On 10 Apr 2001, Junjie Li wrote:
>> We met a serious problem in our lab about the growth chamber. There are
> quite a lot of flies called Fungus Gnats which fed on the arabidopsis
> leaves. At the beginning, we used gnatrol in the water for planting to try
> to control it, but it turned out not to work. The greenhouse manager
> suggested to spray some insecticide called olympic insecticidal soap to
> plants. But he don't know which dosage is effective but safe for
> arabidopsis(not hurt plant). Could anybody have some knowledge about this
> and kindly give us some suggestions?
>> Sincerely yours,