How to Get Rid of Cluster Flies
Carry out essential maintenance to proof your property to reduce the numbers of cluster flies. Vacuum up your cluster flies.
PGM & Son Pest Control
2 min read
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Cluster Fly Pest Control & Eradication
Cluster flies gather in lofts and roof spaces during autumn and winter, and emerge in spring causing sudden cluster fly infestations in rural homes across Herefordshire and Worcestershire. PGM provides award-winning cluster fly control to remove infestations and keep your property fly-free.
Cluster flies making life difficult? Let us help!
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Cluster flies are slow-moving pests that often gather in lofts, roof spaces, and eaves during autumn and winter, entering homes and commercial properties and causing sudden fly infestations. PGM provide professional cluster fly inspection, treatment, and removal—locating the source, eliminating active flies, and helping prevent reinfestation. Trusted across Herefordshire & Worcestershire for fast, affordable, and effective cluster fly control in residential and commercial properties. Cluster Fly FAQs↗
What are cluster flies and how they infest your property
Cluster flies are larger, slow-moving flies that often enter homes and commercial properties in autumn to hibernate in lofts, roof spaces, and wall cavities. Unlike common houseflies, they do not breed indoors, but they can appear in large numbers, gathering around windows, eaves, and ceilings, causing nuisance and stress for homeowners. Infestations typically originate from attic or roof spaces, where the flies hide during colder months before emerging into living areas in spring.
Cluster fly infestations can occur in a variety of situations, including:
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Lofts and roof spaces during autumn and winter
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Wall cavities and eaves where flies hibernate
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Around windows, window sills, and frames in upper floors
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Commercial properties with roof voids or storage areas
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Homes or offices near fields, meadows, or rural areas
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Buildings with small gaps or entry points in roofs and walls
Signs of a cluster fly infestation
Cluster fly infestations are usually noticed in autumn and winter when flies enter lofts and roof spaces to hibernate.
Common signs include:
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Large numbers of slow-moving flies in lofts or roof spaces
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Flies gathering around windows and window sills
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Flies resting on ceilings, walls, and eaves
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Dead flies on window ledges or floors
Other signs include flies emerging from wall cavities, entering living or working spaces, and increased activity on sunny days.
Cluster fly lifecycle and why it matters for effective control
Why sealing entry points is essential for cluster fly treatment success
Cluster flies have a unique lifecycle that affects how and when infestations occur. Understanding this helps ensure treatments target the source, not just the adult flies.
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Adult flies enter lofts and roof spaces in autumn to hibernate
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They remain inactive over winter, hidden in wall cavities and eaves
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In spring, flies emerge to mate and lay eggs in soil, often in nearby fields or gardens
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New flies appear later in the year, repeating the seasonal infestation cycle
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Effective control focuses on loft/roof spaces and entry points, not just chasing visible flies
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1. ADULT CLUSTER FLY
(Pollenia rudis)
2. EGG
4. PUPA
3. LARVA (Maggot)
Cluster flies often return to the same lofts, roof spaces, or wall cavities year after year. While a treatment removes the current infestation, it does not prevent them from coming back in future seasons.
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Effective cluster fly control solutions
Professional cluster fly control targets the source of infestations in lofts, roof spaces, and wall cavities, preventing flies from returning. Treatments are safe, effective, and tailored to both residential and commercial properties.
Our RSPH qualified, NPTA and BPCA accredited team provides specialist fly control for homes and businesses across Herefordshire and Worcestershire. Our cluster fly treatments may include:
Loft and roof space insecticide treatment
Eliminates adult flies hiding in lofts and roof voids.
Proofing and sealing entry points
Blocks access through gaps, vents, and eaves to prevent reinfestation.
Residual insecticide and targeted fogging
Treats walls, ceilings, and cavities where flies gather, ensuring lasting control.
How long does it take to get rid of cluster flies?
Most residential treatments take 1-2 visits over a week, depending on infestation size.
Professional cluster fly control that actually works
3 simple steps to a cluster fly-free space
Request a Quote or On-site Assessment
Contact us to arrange a no-obligation quote. Our qualified experts will evaluate your cluster fly issue and identify the best eradication approach.
Receive a Customised Treatment Plan
Our management team will provide a tailored fly control strategy designed specifically for your property or industry compliance requirements.
Fly Removal & Ongoing Monitoring
Rest assured—we’ll manage the fly removal process, monitor progress, and recommend long-term preventative solutions for sustained protection.
Why choose our cluster fly control experts
Our strength is built on expertise and professionalism. All PGM Pest Control technicians are fully trained in cluster fly biology and equipped with the latest industry leading equipment. Our award-winning senior lead technician, Phil Martin, holds the prestigious RSPH Level 3 Award, ensuring expert leadership and compliance across every job.
Dedicated pest control experts
RSPH level 2 + 3, NPTA, BPCA accredited member, adhere to UK comliance regulations.
Covering Herefordshire & Worcestershire
Rapid response, local pest control teams across Herefordshire & Worcestershire.
10+ years experience
Proven track record, we've helped thousands of homeowners and businesses stay pest-free.
Eco sustainable methods
Eco-friendly pest solutions, and compliant with health, safety & hygiene regulations.
Tailored approach to IPM
Award-winning pest solutions, integrated management designed for long-term success.
Who can help with cluster fly control near me?
PGM’s professional cluster fly control team operates across Herefordshire and Worcestershire, providing fast, affordable treatments.
Our RSPH trained technicians locate infestations in lofts, roof spaces, and wall cavities, remove active flies, and prevent them from returning.
We’re open and ready
Phil Martin
SENIOR CONSULTANT
Joe Martin
PEST TECHNICIAN
Mark Pitt
PEST TECHNICIAN
Our commitment to excellence
An award-winning team of pest experts
PGM is committed to delivering professional pest control services to the highest industry standards. Our technicians receive ongoing training, certification and professional development to ensure safe, effective pest management for homes and businesses. Over the years, PGM has been recognised with multiple industry awards, accreditations and professional memberships, reflecting our commitment to quality and customer service.
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RSPH Pest Management Qualifications
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BPCA Accredited Membership
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NPTA Certified Pest Technicians
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CRRU Best Practice Compliance
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Licensed by the Environment Agency
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Responsible Pest Management Practices
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Locally Accredited Business
"I can't speak highly enough of PGM. They were quick to respond, extremely accommodating with our timetable and efficiently dealt with our fly infestation. A very satisfied customer."
We eliminate 95% of cluster flies in just one week
Case Studies: Cluster fly infestations, removal, and proofing
Real examples of cluster fly problems and how we solved them, with before and after images showing effective removal, control, pest management in residential homes and businesses.
Need cluster fly advice? use PGM AI pest assist for fast answers ↘
Cluster fly control in your local area
Areas PGM cover for professional cluster fly control
Our RSPH qualified, BPCA, and NPTA-accredited pest control technicians provide professional cluster fly control to all areas including Hereford, Leominster, Ross-on-Wye, Ledbury, Bromyard, Kington, Worcester, Redditch, Kidderminster, Malvern, Bromsgrove, and Evesham. The PGM discreet, unmarked vehicles ensure fast, affordable, reliable local service for homes and businesses, areas we cover:
If you would like to discuss your cluster fly problem get in touch.
From village lanes to town centres, we’re just around the corner.
100% coverage to HR postcodes — we’re ready when you are!
Abbey Dore
Alders End
Acton Beauchamp
Allensmore
Adforton
Almeley
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All local technicians are highly trained and certified pest controllers
Rated excellent on Trustpilot committed to customer service
Environmentally friendly cost effective pest control solutions
Cluster Fly Pricing
Every pest control situation is unique. The treatment required for your property depends on several factors including the size of your property and the extent of the problem you’re facing. Because no two jobs are the same, we don’t publish standard prices – instead, we provide you with a personalised quote based on your specific circumstances.
Requesting your fixed-price quote
When you contact PGM, we’ll discuss your pest issue and gather the details we need to give you an accurate quote. Our quotes are fixed-price with no hidden charges or unexpected costs – what we quote is what you pay. In certain situations, we may recommend a property inspection before finalising your quote. This allows us to properly assess the situation, and ensure we recommend the right treatment approach. If an inspection is necessary, we’ll explain this to you and let you know whether there’s any charge involved.
Frequently asked questions about cluster fly control and infestations
What are cluster flies and how do I know if I have an infestation?
Cluster flies are larger, slow-moving flies that enter lofts, roof spaces, and wall cavities in autumn and winter to hibernate. Signs of an infestation include flies gathering around windows, resting on ceilings and walls, dead flies on ledges, and increased activity in upper floors.
When do cluster flies usually appear in homes and businesses?
Cluster flies typically appear in autumn, when they seek warm places to hibernate, and may remain visible in winter and early spring. Activity often increases on sunny days, especially in lofts and roof spaces.
Can I get rid of cluster flies myself, or do I need professional treatment?
While small numbers can sometimes be managed with DIY methods, professional treatment is recommended for effective and long-lasting control. Experts can locate the source in lofts, roof spaces, or wall cavities and use safe, targeted treatments to prevent reinfestation.
How long does a professional cluster fly treatment take?
Treatment duration depends on the size of the property and the severity of the infestation. Most residential treatments are completed in 1–4 hours, while larger or commercial properties may take longer.
How can I prevent cluster flies from returning after treatment?
Prevention focuses on proofing entry points such as vents, roof gaps, and eaves, keeping lofts and roof spaces well-sealed, and regular inspection. Our technicians provide tailored advice to stop flies from re-entering and help keep your home or business fly-free.
How do I get a quote for cluster fly control services near me?
You can contact PGM via phone or booking form to request a free affordable fixed-price quote. Our team will assess your needs and provide a transparent, no-obligation estimate. Read more helpful cluster fly FAQs ↗
Still concerned about CLUSTER FLIES in your property?
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Hereford • Worcester • Leominster • Bromyard • Malvern • Ross-on-Wye • and all surrounding villages
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Struggling with cluster fly in your property?
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