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House flies and drain flies are two of the most common nuisance flies homeowners deal with, and both tend to appear in numbers when conditions are right. House flies are the familiar gray black flies found buzzing around kitchens and trash areas, attracted to food waste and organic matter. Drain flies, also called moth flies because of the fine hair covering their wings and body, are smaller, darker, and weaker fliers that hover near sinks, showers, and floor drains.
Drain flies breed in the organic buildup inside pipes, and their presence usually signals a moisture or plumbing issue. Other species you may encounter indoors include fruit flies, drawn to ripening produce, and fungus gnats, which breed in overwatered houseplant soil. At Proforce Pest Control, we identify the species, locate the breeding source, and treat the problem at its origin, not just the flies you are seeing.
Those are most likely drain flies. They breed in the organic film that accumulates inside drain pipes, especially in sinks, showers, or floor drains that do not get regular use. Slow or partially clogged drains are particularly attractive to them. Our service professionals treat the organic buildup directly using foam products designed to reach inside the pipe, and we will check for underlying moisture or plumbing issues that may be contributing.
Drain flies are small, dark, and moth like, with fuzzy wings, and they hover near drains and damp areas. Fruit flies are slightly rounder with red eyes and are drawn to ripening fruit, open beverages, and fermented organic matter. The distinction matters because each species requires a different treatment approach, and targeting the wrong breeding source will not resolve the problem.
Treatment depends on the species and breeding source. For drain flies, we use a foam product that breaks down the organic buildup inside pipes where they breed. For house flies and other species, we apply bait products to non food surfaces like baseboards, window frames, and utility areas where flies rest and gather. Severe or recurring issues may call for additional measures like fogging or exclusion improvements, and your service professional will let you know if that is the case.
Most homeowners see a noticeable reduction within a few days. Drain flies typically require a reassessment in 7 to 10 days, with a follow up treatment if the organic source has not been fully addressed. Ongoing control depends on correcting the conditions that attracted them, including fixing leaks, maintaining drains, and reducing excess moisture in the home.
To learn more about the pests invading your space and how we can help eliminate them for good
