Use Cinnamon for Plants For outdoor plants, Guerrera sprinkles cinnamon on the soil to naturally kill fungus gnat larvae.

RELATED: How to Get Rid of Gnats. "Drain fly" is just one of ... moth flies,' 'sewer flies,' 'filter flies,' and even 'sewer gnats,'" Yamaguchi explains. Drain flies are pretty small, coming ...

“Many gnats feed, breed, and hang out in sludgy, moist substrates,” Crumbley says. “These substrates could be saturated soil, animal waste, and clogged drains and gutters.” The best way to get rid of ...