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Drain Fly Control in Waukesha County, WI

Psychodidae

Low Threat

Drain flies (moth flies) breed in the organic buildup inside drains, septic systems, and sewage treatment areas. These fuzzy, moth-like flies hover near sinks and drains, indicating biofilm buildup in plumbing. In Waukesha County, they're common in basements with floor drains, older bathrooms, and commercial kitchens.

Signs of Drain Flies

  • Small moth-like flies near drains
  • Flies hovering near sinks
  • Recurring flies despite cleaning
  • Flies emerging from overflow holes

Common Locations

Bathroom drainsBasement floor drainsKitchen drainsUtility sinksNear septic systems

Prevention Tips

  • Clean drains with enzyme cleaners
  • Fix slow drains
  • Maintain septic system
  • Regular drain maintenance
  • Seal unused drains

Wisconsin Climate Factors

  • Year-round indoor pest
  • Infrequently used drains dry out and attract
  • Humidity promotes drain biofilm

Seasonal Activity

Spring
6/10
Summer
8/10
Fall
6/10
Winter
4/10

Drain Flies FAQ – Waukesha County

Why do I have small flies near my Waukesha County bathroom drain?

Drain flies breed in the organic film inside pipes. They indicate buildup in your plumbing that needs professional cleaning. Surface cleaning doesn't reach the breeding source deep in pipes.

Need Emergency Pest Service?

Don't wait when safety is at risk. PIP's emergency team responds same-day across Waukesha County.

Call Now: (262) 893-5271

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