Circling back again...picked up a book, Don't Repot that Plant! (my favorite approach) and now I see the wisdom of using slices of raw potato for gnats. The adults lay their eggs in it, then you dispose of the potato.
In between the fans, sticky paper and Mosquito bits and dunks, I have seen a noticeable reduction in the population. I think GNATROL is the same as Mosquito bits but without the corn element, but it's a hefty purchase so I'll stick to soaking the mosquito bits. Bulbos are not happy at all, but I can't tell if that is because of the gnats, or the mosquito bits, or winter (they are kept at min 70 deg F)...or other, unknown. I wish I could isolate the source of the problem as this happens every winter.
Thanks for the potato tip, will be trying that now too!
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