Eliminate standing water in sinks, tubs, trays, and pet bowls
Empty and clean trash cans regularly
Remove overripe fruit and food scraps
Store produce in the refrigerator or sealed containers
Clean drains with boiling water or a drain cleaner
Scrub sink drains and garbage disposals
Replace or clean damp sponges, mops, and dish rags
Water houseplants less often
Let soil dry out between waterings
Remove decaying plant matter from pots
Use yellow sticky traps near plants and windows
Set out vinegar traps near gnat activity
Vacuum gnats from windows, walls, and ceilings
Seal cracks around windows and doors
Repair torn window and door screens
Keep doors and windows closed when possible
Take out garbage and compost frequently
Clean counters, floors, and pet feeding areas
Check for hidden moisture in cabinets, under sinks, and around appliances
Use a fan to reduce gnat activity indoors
Replace potting soil if fungus gnats keep returning