One of the problems I've had in the past is that when I either bring plants or cuttings inside and grow them under lights during the winter, I get an ever increasing population of small flying bugs. My son has the same problem in San Francisco as they have fruit flies around their organic waste container that they are mandated to keep for the trash. His solution is to grow carnivorous plants, Drosera, right next to the organics and it does attract and catch the small pesky flies.

I just bought two Drosera from petflytrap.com and hope to duplicate his success.