Remove overripe fruit, food scraps, and trash
Store fruit and vegetables in the refrigerator
Clean sinks, drains, garbage disposals, and trash cans
Wipe up spills and crumbs immediately
Empty indoor compost and trash regularly
Fix leaky pipes and eliminate standing water
Let potting soil dry out between waterings
Replace or treat infested houseplant soil
Use sticky traps near plants, sinks, and windows
Set out apple cider vinegar traps
Vacuum up visible gnats
Keep windows and doors closed or screened
Check for and remove breeding sources
Use a fan to discourage gnats from gathering
Repeat cleaning and trapping until they are gone