A closer look

Commercial Fly Management

Steady routines for restaurants and food businesses: sealed dumpsters, drain cleaning, air curtains and light traps.

Where to start

Tell the company where you've noticed flies, how long it has been happening, and anything you've already tried. Photos and a short timeline give the inspector a useful starting point.

What to discuss during the inspection

Ask which areas need checking, what was found, and which treatment options fit. Have the inspector explain how to prepare and what follow-up may be needed.

What affects the quote

Access to the affected areas, how far the problem has spread, and the number of visits all affect the work involved. Ask what is included so you can compare the options.

Questions to ask before you book

How do you confirm it's flies?

Ask what the provider saw and how that diagnosis was reached before any work is authorized.

What will you do, and why?

Have the provider explain each step, the products used, and why that approach fits this property.

What preparation do I need?

Clear access to the affected areas and follow any written preparation and re-entry instructions.

What does the price include?

Confirm inspection fees, the number of visits, and any follow-up or warranty terms in writing.

What to look for

Flies at sunny windows

Big, slow flies gathering at windows in fall or on warm winter days are usually cluster flies coming out of the walls.

Tiny fuzzy flies by the sink

Moth-like flies near drains are drain flies. Tape over the drain overnight; flies stuck to it confirm the source.

A sudden swarm and a smell

Shiny green or blue flies plus a bad smell usually mean a dead mouse or bird nearby.

When it happens through the year

spring

Flies return as the weather warms. A good time to check screens and door sweeps.

summer

Peak season. Heat speeds up the life cycle, so empty and rinse trash bins often.

fall

Cluster flies look for a way into walls and attics in the North. Seal gaps early.

winter

Cluster flies can appear at windows on warm days. Elsewhere it's the quiet season.

Frequently asked questions

Why do I keep getting flies?

There's usually a source nearby: a trash bin, a drain, compost or a dead animal. Find it and the flies stop.

How do I get rid of drain flies?

Scrub the drain with a stiff brush, then use an enzyme cleaner every night for a week. Bleach alone won't clear the slime.

What are the big flies at my windows?

Usually cluster flies that spent the winter in the walls. Vacuum them up and seal gaps before next fall.

Does a swarm of flies mean something died?

Often. Big, shiny flies and a bad smell usually point to a dead mouse or bird.

Are bug bombs worth it?

No. They don't reach the source, and the flies come back.

What does fly control cost?

Most home jobs cost $100–$450. Cluster flies and businesses can cost more.

Ready to talk to a provider?

Describe what you've noticed and ask about an inspection or a quote.

Ask a question or get a quote