When small flies keep drifting past your face or gathering near a window, it can be hard to tell where they are coming from. If houseplants are nearby, fungus gnats are one possibility—but the insect and its source still need to be checked.
Call or text Modern Pest Control at 253-414-1987 for a consultation and professional opinion. Describe the activity, the plants or other damp areas nearby and when it began. You can text a photo or short video if available; it is optional.
The flying adults and the source are different parts of the problem
Fungus gnat adults are delicate, dark, small flies often seen near potted plants. The larvae live in moist growing media and feed on fungi and organic matter; high numbers can also affect roots.
Swatting adults does not tell you which pot or damp material is supporting them. Observe where activity is strongest before changing every plant in the house.
Check the watering conditions, not just the insect
Excess moisture and poor drainage can support fungus gnats. Where suitable for the plant, let the growing-medium surface dry between waterings and address water collecting in saucers or containers.
Avoid imposing the same watering schedule on every plant. Tell us which pots stay wet, whether any were recently purchased or repotted and when the flying insects first became noticeable.
Monitoring helps narrow down the location
Yellow sticky cards placed near plants can help monitor flying adults. They show activity but do not, by themselves, remove the developing insects in the growing medium.
If you already use cards, note the pot and date rather than combining all catches into one count. Place any monitoring device where children and pets cannot access it.
Before moving or discarding all your plants
Moving affected plants to another room can allow emerging adults to reach other pots. Discuss the source and practical changes before relocating the collection.
Let us know if particular plants are valuable or sentimental. The first conversation can focus on the likely source and what evidence is needed; a few flies are not a reason to discard every plant automatically.
If the source is not obvious
Tell us if you have no houseplants, if the activity is concentrated by a drain or if the insects look different from the description. Small flies should not all receive the same diagnosis.
Mention damp storage, potting materials or a known leak if relevant. We can discuss whether identification or a closer inspection would help before a property treatment is proposed.
What a useful recommendation should cover
The recommendation should connect the identified insect to the material supporting it. Ask which moisture or maintenance changes matter, what monitoring can show and whether any additional control is warranted.
Share products already used on plants or in the room, including their names and application dates. Let us know about pets, children and any limits on moving the pots so the next step is practical for your home.
A LITTLE MORE CLARITY
Common questions
Do adult fungus gnats bite?
Adult fungus gnats do not bite people. If biting is the concern, do not assume the small flying insects you see explain it; ask for identification.
Will drying the soil surface kill the plant?
Plant requirements vary. Adjust excess watering and drainage while respecting the needs of the specific plant. A plant-care specialist can help if you are unsure how much drying it tolerates.
Will sticky cards solve the whole problem?
Cards help reveal adult activity, while the source can still support developing insects. Use observations from the cards to guide the assessment and source correction.
How quickly should activity improve?
That depends on the source, conditions and steps taken. Track the trend over time and ask when to report continuing activity; an exact end date should not be promised from a phone image.
LET’S TALK IT THROUGH
Get help with the source, while keeping plant care in perspective.
Call or text Modern Pest Control at 253-414-1987 for a consultation and professional opinion in King, Pierce or Thurston County.
Include your city or ZIP code, the rooms involved and any recent plant purchases, repotting or watering changes. Photos or a short video are welcome by text, but optional. We can start with your description.
Request a consultation online ↗