What are those little dark-colored flies that come out of my bathroom sink?

Is this what you are seeing?


Those are representatives of a fly family called Psychodidae, commonly called drain flies, sink flies or moth flies. These insects are harmless, they don’t bite, sting or transmit diseases. However, they are unsightly. They’re often seen near drainpipes because that’s where the females lay eggs, in clumps of built-up organic matter. Drain flies often show up in bathrooms where a sink or shower hasn’t been used for a few days. Click here to find information about managing infestations of these and other nonbiting flies.

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If you have questions that weren’t answered by the FAQ, contact us or contact your local Extension office.



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Posted: May 6, 2014

Category: Home Management, Pests & Disease, Pests & Disease, UF/IFAS, UF/IFAS Extension
Tags: Bug, BugWeek, Entomology, FAQ, Flies, Insects

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