You can clean all day, but you’ll still have adult gnats flying around. You need a trap. The classic hit? Apple cider vinegar. Pour half an inch into a small bowl, add a drop of dish soap (to break the surface tension), and cover with plastic wrap. Poke a few holes. The gnats smell the vinegar, crawl in, and drown. Darkly satisfying, isn’t it?
If you’re feeling fancy (or disgusted by dead flies in your bowl), buy yellow sticky traps. They’re cheap, sticky, and fungus gnats find them irresistible. Stick them in your plant pots. Within a day, you’ll have a horrifying little trophy collection. Don’t stare at it too long before you toss it.
The Counter-Intuitive Trick: Red Wine
If you’re like me and you lost a glass of wine to a gnat, you’ll love this revenge tactic. Leave out a shallow dish of old red wine (the cheap stuff you wouldn’t drink anyway). Add a drop of soap. They love the fermented smell, and they’ll dive in like it’s happy hour. Who’s laughing now, you little winged jerks?
3 Ways to Keep Gnats Away from Your Face - wikiHow