Housekeeping · 해충 관리

Drain flies at home: six steps to find and remove breeding buildup

Drain flies can breed in moist organic film inside drains. Find the source and remove the buildup safely.

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Wikimedia Commons · Photo: Martin Cooper / Wikimedia Commons, CC BY 2.0 (unmodified). · Creative Commons Attribution 2.0 Generic ↗

Swatting fuzzy adult flies may not solve the issue if breeding deposits remain. Penn State Extension identifies removal of the organic breeding material as the core control.

Your try-it-at-home checklist

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1. Look for small fuzzy moth-like flies near sinks, shower and floor drains; distinguish them from fruit flies.
2. Check seldom-used drains and overflow openings to narrow down the breeding site; ask a professional when uncertain.
3. Wear gloves and remove any accessible drain cover only as its instructions allow.
4. Physically scrub accessible organic film with a suitable brush, without forcing tools deep enough to damage pipes.
5. Check that traps do not dry out; call a plumber for persistent leaks, blockage or sewer odors.
6. Monitor for returning adults over several days. Never mix bleach, acids or drain-cleaning products, and do not rely solely on harsh chemicals.

Your try-it-at-home checklist

Further reading

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