Identify the source of the gnats
Remove overripe fruit and vegetables
Store produce in the refrigerator
Empty trash and compost regularly
Clean drains with hot water and a drain cleaner
Fix leaking pipes and standing water
Let houseplant soil dry out between waterings
Replace or refresh potting soil if needed
Use sticky traps near infested areas
Place apple cider vinegar traps near gnats
Vacuum visible gnats
Wipe down counters, sinks, and spills
Keep food sealed and covered
Rinse recyclables before storing
Use screens on windows and doors
Reduce indoor moisture with fans or dehumidifiers
Check for damp towels, mops, and rags
Remove decaying organic matter from around the home
Repeat treatment until the infestation is gone