One opt to use Schultz' Home and Garden Spray made from Chrysanthemum
flowers. Although there is much debate whether pyrethenes are harmful
to the environment, it is still a natural and appears to be very
effective for ants.

.. . . Pam
Everything Orchid Management System
http://home.earthlink.net/~profpam/page3.html


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Kenni Judd wrote:

If "several" is a dozen or less, get a big dishpan. Fill to just above the
height of the pots with water to flush out the ants [it will take 10-15
minutes]. Then you can kill them with rubbing alcohol. Or, get something
with acephate as the active ingredient -- Orthene, Isotox, etc.

While you are treating, take a look at the mix. If ants are nesting in it,
it may be breaking down -- as in, time to repot.