Options:
1) Switch to a less organic mix -- one that drains better and dries out faster. (Yes this does mean you may need to water more often but the drying out will be an issue for the larvae.)
2) Water with mosquito dunk water. (NOTE: This is NOT a quick fix. The adult gnats will not be affected. It is the larvae that will be killed.)
3) Reduce watering so soil does not stay so wet.
4) For soil plants, top with a layer of fine gravel. It makes it difficult for the adults to reach the soil.
5) Get some carnivorous plants. I honestly can't recall when I last had anything I could call an "infestation". My cps tend to keep the gnats well in check.
.
|