Do venus fly traps eat gnats?

Those are probably fungus gnats. While a fly trap could in theory aid in the capture of the gnats, it would be very limited by the number of traps on the plant and the time in between. The important thing is to block off the top of your soil and keep the top 1-2 inches dry as a bone, possibly using a layer of sand or gravel to achieve this. read more

Adult fungus gnats are typically only a nuisance for your Venus flytrap, but their larvae can cause considerable feeding damage, particularly on young plants. Fungus gnat larvae burrow into plant stems and feed on leaves that touch the surface of the potting media. read more