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Cluster Flies in the UK: How to Identify, Prevent, and Control Them

As the cooler months set in, one common household pest that often becomes a nuisance in the UK is the cluster fly. These flies are particularly known for invading homes during autumn and winter, seeking warmth and shelter. If you're dealing with an infestation, understanding what you're up against and knowing how to address the problem is key. In this post, we will cover what cluster flies are, how to identify them, why they invade your home, and effective pest control solutions.


What are Cluster Flies?

Cluster flies (Pollenia rudis) are a common species found throughout the UK. Unlike house flies, cluster flies are not typically associated with unhygienic conditions. They spend most of their life cycle outdoors, feeding on nectar and other organic materials, but they enter homes when the temperature drops.

Key characteristics of cluster flies include:

  • A sluggish movement compared to other flies.

  • A dark, non-metallic grey body with golden hairs on their thorax.

  • They typically gather in large numbers in attics, lofts, or unused rooms, hence the name “cluster” flies.

Though they don't pose significant health risks, their sheer numbers and presence can be a nuisance.


Why Do Cluster Flies Invade Homes?

As temperatures begin to fall in autumn, cluster flies seek out warm, quiet spaces to hibernate. Loft spaces, attics, and wall cavities offer the perfect environment for them to cluster during the colder months. Once inside, they remain relatively inactive but can emerge in large numbers on warmer winter days or during early spring when the weather starts warming up. Cluster flies are particularly attracted to homes that offer easy access through gaps in roof tiles, eaves, or window frames. If your property is located near open fields or woodland areas, you may be more prone to infestations since cluster flies thrive in rural environments.


How to Identify a Cluster Fly Infestation

The most obvious sign of a cluster fly infestation is the appearance of large numbers of flies inside your home, especially around windows, skylights, and loft spaces. They are often noticed in late autumn when they first enter the house, but they can also reappear during warmer spells in winter or early spring.

Signs to look out for:

  • Large groups of slow-moving flies near windows or in the attic.

  • Buzzing sounds from walls, attics, or unused rooms.

  • Fly carcasses in loft spaces or around windowsills.


How to Prevent Cluster Flies

Prevention is key to keeping cluster flies at bay. Here are some effective pest prevention tips to protect your home:

  1. Seal Entry Points: Inspect your home for any gaps or cracks around windows, doors, and roof tiles. Use sealants or caulk to close up potential entry points where flies could enter.

  2. Install Fly Screens: Adding mesh screens to windows and air vents can help prevent flies from entering your home during the autumn months.

  3. Keep Loft Spaces Clean: Cluster flies are attracted to quiet, undisturbed areas. Regularly inspect and clean your loft or attic to make the space less appealing to them.


How to Get Rid of Cluster Flies

Once you have an infestation, professional pest control is often the most effective way to eliminate the problem. Here are some methods that can help:

  1. Vacuuming: If cluster flies are already present in your home, use a vacuum cleaner to remove the flies. This method is best for small infestations.

  2. Insecticide Sprays: Aerosol insecticides or fly sprays can help to kill cluster flies. These products should be used with caution, particularly in loft spaces, as they may require proper ventilation.

  3. Fogging Treatments: For larger infestations, a professional pest control company can carry out a fogging treatment. This method uses insecticide in the form of a fog or mist, which can penetrate hard-to-reach areas like attics and wall cavities.

  4. Cluster Fly Traps: Sticky fly traps or electric fly killers are useful for controlling cluster flies in homes and businesses. They can help capture flies that emerge indoors during warm spells.


Why Hire Professional Pest Control Services for Cluster Flies?

While some homeowners may attempt DIY methods, a persistent infestation can be challenging to eliminate completely without the help of professionals. A licensed pest control company will have the experience and tools necessary to address the infestation and prevent future issues. Our expert pest control team uses the latest techniques to safely and efficiently remove cluster flies from your property, ensuring long-lasting results. We also offer preventative treatments to stop these flies from returning.


Contact Us for Cluster Fly Removal

If you're dealing with a cluster fly problem, don’t let it get out of hand. At MB Pest Control, we provide fast, reliable, and affordable pest control services for cluster flies and other household pests across the UK.

  • Experienced Technicians: Our team of experts will assess your home, recommend the best treatment, and help you protect your property from future infestations.

  • Comprehensive Solutions: We use environmentally-friendly products and methods that are safe for your home, pets, and family.

  • Ongoing Support: We offer advice on prevention and provide follow-up visits if needed.


Get a Free Quote Today

For effective cluster fly removal and prevention, contact us today at 07912665290 or info@mb-pestcontrol.co.uk. Let us help you reclaim your home from these unwelcome guests!

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