Gnats, generally categorized as small, nonbiting insects, can be extremely irritating. Although they are not harmful, their populations can grow quickly and the annoyance factor can increase exponentially each day. Gnats, or fungus gnats, are most often found in moldy or rotting vegetation. Indoors, you may find gnats in potted houseplants. Catching gnats in traps can cut back on gnat populations. There are other methods of gnat control that can be used as well.
While there are no traps made specifically for gnats, like there are for fruit flies, general fly remedies can help trap gnats.