McCloud Answers
Our housekeepers keep finding little white flies in bathroom areas after cleaning. Could they be coming from the drains?
When white flies in bathroom areas are reported, the likely suspect is the white, wormlike fly larvae of drain flies or phorid flies that can breed in moist drain buildup inside plumbing.
When they become adults, they are no longer white. Color alone won’t confirm their identity or source, so have your pest management provider examine a specimen or clear photograph before choosing treatment.
When investigating small white flies in bathroom areas, check sink and shower drains, overflow openings, leaks, and persistently damp spaces. A sparkling bathroom can still harbor breeding material inside its drains: cleaning visible surfaces doesn’t remove that source.
If drain breeding is confirmed, physically remove the slimy organic buildup and use an appropriate biological drain cleaner according to its instructions. Repair leaks, improve ventilation, and establish a routine drain-maintenance schedule. Spraying adult flies alone will not eliminate developing larvae.
McCloud’s fly management services focus on identifying the insect, locating breeding sites, and recommending sanitation and structural improvements to help prevent recurring complaints.
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