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Flies
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Flies

About Flies

What Are Flies?

Flies are fast-breeding insects drawn to food waste, moisture, and decaying organic matter. The most common types found around homes are house flies, fruit flies, and drain flies, each with a different breeding source and a different fix. Warm weather speeds up their life cycle considerably, which is why fly problems tend to escalate quickly once a breeding site is established.

7-10
Days for a house fly to go from egg to adult in warm conditions

Identification

House flies are gray with four dark stripes on the thorax and a single pair of wings. Fruit flies are much smaller, tan or brown, with noticeably red eyes, and tend to hover around ripening produce or drains. Drain flies are fuzzy and moth-like in appearance and are usually found resting on walls near sinks or floor drains rather than flying much at all.

Size2-8mm ColorGray, tan, or dark WingsOne pair ActiveDay Lifespan2-4 weeks
Close-up image of a fly for identification
A common house fly, shown close up for identification.

Which Fly Am I Dealing With?

Treatment depends entirely on which fly you have, since each one breeds in a different spot. Fruit flies almost always trace back to ripening produce or a dirty drain, while house flies usually point to garbage or pet waste nearby.

Fruit Fly

Small, tan, red eyes, hovers near produce, drains, or trash bins

House Fly

Larger, gray with dark stripes, drawn to garbage, pet waste, and food left out

Signs of an Infestation

A few flies drifting in through an open door is normal. A pattern that keeps coming back usually points to an active breeding site somewhere close by.

Clustering at windows
Flies repeatedly gathering at windows or light fixtures, especially in the morning
Larvae or maggots
Small, pale larvae in trash cans, drains, or around pet waste
Fly specks
Tiny dark spots on walls, ceilings, or light fixtures from fly waste
Buzzing near drains
Persistent activity around sink or floor drains, often a sign of drain flies
Flies near produce
Small flies appearing around fruit bowls or compost bins within a day or two
Odor near trash areas
A sour or rotting smell near garbage cans or outdoor bins, often paired with visible activity

Habitat and Behavior

Flies breed anywhere organic matter is decaying: garbage cans, compost, pet waste, drains coated with grime, and produce left out too long. A female house fly can lay several hundred eggs in her lifetime, and in warm conditions those eggs can become breeding adults within a week, which is why a fly problem can go from minor to widespread fast if the source isn't addressed.

Why Drains Are an Overlooked Source

Drain flies breed in the thin layer of organic film that builds up inside sink and floor drains, not in standing water itself. That's why spraying the room rarely helps. The fix has to target the drain, not just the flies you can see.

Risks

Flies don't bite, but they pick up bacteria from garbage, drains, and waste, then land on countertops, dishes, and food. That makes them a real contamination risk in kitchens, not just a nuisance. In larger numbers, they can also spread bacteria linked to food-borne illness, which is part of why commercial kitchens treat fly activity as more than cosmetic.

Prevention Tips

Keep trash cans sealed and take garbage out before it accumulates
Clean sink and floor drains regularly to remove the organic film flies breed in
Repair or install screens on doors and windows
Refrigerate ripening produce or use it before it starts to break down
Clean up pet waste from the yard on a regular schedule
Rinse recycling before it sits in the bin for multiple days

When to Call a Professional

Fly traps and sprays can thin out the adults you see, but they don't touch the breeding site, which means the problem keeps returning until that source is found and treated. Drain and sewer-related fly issues in particular are easy to miss without the right inspection.

Time to Call in Help If:

Flies keep coming back after cleaning obvious sources, you're seeing larvae and can't locate the breeding site, or activity is concentrated in a kitchen or food-prep area. A professional inspection finds the source instead of just treating the symptoms.

Fly Control Near You

Price Termite & Pest Control treats fly infestations across Melbourne, West Palm Beach, and Fort Lauderdale.

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