Professional Cluster Fly Control

Safe, effective treatment and long-term prevention for homes and businesses
Cluster flies are a common nuisance pest, particularly during autumn and winter when they gather in large numbers inside lofts, wall cavities, and living spaces to shelter from colder temperatures. While they do not breed indoors, their presence can be unpleasant, unhygienic, and disruptive.
Because cluster flies return to the same properties year after year, professional treatment is often the most effective way to control and prevent recurring infestations.

Our trained technicians locate entry points, treat affected areas, and provide practical advice to reduce future clustering.

Fast, reliable response
Safe and effective cluster fly treatments

Expert advice and long-term prevention

Fast, Effective Cluster Fly Control

If you are noticing large numbers of flies appearing in lofts, windows, light fittings, or living areas, it is important to act quickly. Cluster flies often emerge in groups, particularly on warm winter days, and can quickly become overwhelming.

Professional cluster fly control focuses on eliminating existing flies, treating harbourage areas, and preventing re-entry. Our approach delivers effective, long-lasting results.

PREMIER | ENVIRONMENTAL

Call us today

01254 372055

Contact us today to get a quote and arrange an appointment.

How Cluster Fly Problems Are Treated

Effective cluster fly control requires a structured and thorough approach.

1.

Inspection & Assessment

We identify entry points, resting areas, and affected voids such as lofts and wall cavities.

2.

Targeted Treatment

Specialist treatments are applied to loft spaces, window frames, wall voids, and external access points. All treatments are carried out safely and professionally.

3.

Prevention & Aftercare Advice

We provide clear guidance on sealing entry points and minimising future infestations.

Understanding Cluster Flies

Cluster flies are slightly larger than common house flies and have dark grey bodies with golden hairs on the thorax. Unlike house flies, they do not breed in food waste. Instead, their larvae develop in soil as parasites of earthworms.

They enter buildings to hibernate and often return to the same locations each year.

Signs You May Have a Cluster Fly Problem
  • Large numbers of flies gathering indoors
  • Flies around windows, lofts, or light fittings
  • Sudden fly activity during warm winter days
  • Dead flies accumulating on window sills or floors

Preventing Cluster Fly Infestations

To help prevent cluster flies returning, we recommend:
Sealing gaps around windows, doors, and roofing
Fitting insect screens to vents
Keeping loft spaces clean and well maintained
Following all aftercare advice provided after treatment
If cluster flies are affecting your home or business, professional cluster fly control can restore comfort and hygiene.

Explore Our Other Pest Control Services

We provide expert solutions for all types of pests, protecting homes and businesses across Blackburn and beyond.