Fungus gnats are in every pot of moist soil of germinating pots.
This year I'm declaring war on every ant that crawls across the patio.
Ants have a symbiotic relationship with almost everything that sucks sap, even "farming" the beggars and placing them back on plants in spring.
From leaf rollers, aphids, scale, etc. etc., ants are the mode of transportation.
http://rspb.royalsocietypublishing.org/ ... 2319.short
I've heard that you can mix a little honey with boric acid powder (avail from pharmacy), place it in a mayonnaise lid in a sheltered area (careful, dangerous for pets!).
Ants apparently take that mixture home.
Can kill the whole colony.
Hope so.
I've had enough!

Barb