Our apple trees are beginning to drop ripe fruit. A few days ago I noticed an apple under the trees that had a hole around which there were several fruit flies. Knowing how fast these tiny flies breed, I brought the apple into the greenhouse to rot, placed it on one of the growing tables, and surrounded it with my few Drosera (paradoxa and petiolaris "red" both from Ron Lane in trade (*thanks* Ron, they're growing great!), a red and standard capensis, an adelae from Lowe's).
Within several days the fruit flies had bred to an astonishing quantity, and now my drosera are gorging on many of those who dare to fly from their safe and cherished home, the rotten apple. So successful is this drosera buffet that I brought in another apple, carved and punched a few holes in it, and set it beside the now mostly rotten apple to make a new home for the fruit flies.