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houseplants and gnats

Beverly Erlebacher bae at cs.toronto.edu
Tue Apr 10 21:05:49 EST 2001

In article <_5NA6.11471$aq5.208362 at typhoon.mw.mediaone.net>,
Moll McCarty <mollymc at wi.rr.com> wrote:
>Thanks for that, Dennis. I'll get the diazanon, when the need arises. Any
>known allergies to it?

For a non-toxic control, keep a cm or so (1/2 inch) of pure sand on top
of the soil.  This is unattractive to the female gnats when they go to 
lay their eggs, and easy to keep dry to make it even less attractive.  

Also, the yellow sticky traps sold to catch white flies are even more 
effective at catching fungus gnats.

Your gnat outbreak may be due to a problem in just one pot.  A rotting
flower bulb can produce swarms of gnats, which will then hover around
all your other houseplants, get into your coffee cup, annoy your spouse
or office mates, etc.

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