Remove ripe fruit, food scraps, and trash
Clean sinks, drains, and garbage disposals
Empty and dry trash cans regularly
Fix leaks and reduce excess moisture
Let soil dry out between waterings
Place apple cider vinegar traps near gnats
Use a bowl with vinegar, dish soap, and plastic wrap holes
Set out sticky traps near infested areas
Vacuum visible gnats
Use a fan to disrupt flying gnats
Cover food and drinks
Store produce in the refrigerator
Replace overwatered plant soil if needed
Check for and eliminate breeding sources
Keep windows and doors screened
Dispose of infested houseplant debris promptly