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Pest Guides

House Flies and Cluster Flies in Buffalo: Risks and Fixes

By the Buffalo Pest Control team · Published 2026-10-17 · Updated 2026-10-20

Pest Guides: House Flies and Cluster Flies in Buffalo: Risks and Fixes

Flies do not bite, but they land on waste and then on your food. Here is why they matter, where cluster flies in Buffalo attics come from and what to do.

Why flies are a health issue

House flies and blow flies feed and breed on garbage, animal waste and decaying material. Bacteria stick to their bodies and legs, and they can transfer germs such as Salmonella and E. coli to food and surfaces as they land. That is why a fly problem in a restaurant or food storage area is treated seriously.

Cluster flies in Buffalo attics

Cluster flies develop outdoors on earthworms and look for warm spots in fall. They enter through cracks in siding and the roofline, spend winter in attics and wall voids and wake up indoors on warm winter days. They are slow and dull colored and often gather around sunny windows.

Technician performing a rodent inspection in Buffalo

Finding the breeding source

Look for garbage that is not sealed, pet waste, wet organic material, damaged screens and drains with buildup. In businesses, dumpsters, grease traps and floor drains are common sources. Without the source, killing adults only gives short relief.

What works

Sanitation, sealed lids, repaired screens, sealing gaps in the roofline and treatment of the places flies rest give the best results. In kitchens, traps help with monitoring.

What we treat

We treat house flies, blow flies and cluster flies. Fruit flies, drain flies, crane flies, gnats and maggots are outside our service. Call 716-347-5858 to book an inspection.

Dealing with this right now?

Our fly control service handles exactly this: it starts with a professional inspection.

Frequently Asked Questions

Why do I get flies in my attic in winter?

They are probably cluster flies that entered in fall to overwinter. Sealing gaps and treating the voids reduces them.

Are flies dangerous?

They can carry bacteria on their bodies and legs and spread it to food and surfaces, so they matter most in kitchens and food businesses.

Do you remove maggots or treat drain flies?

No. Maggots, drain flies, fruit flies and gnats are outside our service.

Sources
BUF
Buffalo Pest Control Team

Pest management professionals serving Buffalo and Erie County. We publish what we learn on the job. Read more about us or browse our services.

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