I fed a couple of firebugs to the plants. The VFT seemed to love it, and so did I, witnessing the closing of the trap over the helpless bug *muhahahhaha*. I'll have to make a video of that some day.
On the other hand, neither the Ping nor the Sarracenia seemed sticky enough to keep them. I guess I'll have to find them smaller feed. Shame, firebugs are everywhere at the moment.