I would just give them a good soaking in water. You could add a little dish
soap to the water or even an insecticidal soap ( I'm not into synthetic
insecticides). My first fall bringing in my plants in I was shocked at the
insects that had moved into my orchid pots especially the roaches and ants.
I flushed all the pots with the soapy water and didn't see a sign of the
pest all winter - I keep mine inside under lights. Of course most will say
not to reuse the water so as not to spread disease to the other plants but
soapy water is pretty cheap.

Mark

"Roots" wrote in message
...

Hi,
First post here.
I repotted my orchids two weeks ago with orchid compost which had been
outside. A few days later I noticed flies - lots of flies and killed as
many as I could. One of my orchids that I couldn't salvage was dying at
the time.
I could only put this down to flies laying eggs in the compost outside.
What I'm worried about is that my plants will be damaged.
I have just purchased some new compost and not sure if I should repot
them again so soon - but obviously don't want the flies to do any more
damage.
Should I soak them in water in a bucket and repot them tomorrow? Do you
think they could handle more handling? Do you think they will be
permanently damaged?

Very grateful for any advice




--
Roots