Cluster Flies

Cluster Fly Control in the North East

From £144 inc. VAT

Cluster flies are a common seasonal nuisance in homes and commercial buildings across Newcastle, Sunderland, Durham, Gateshead and the wider North East. Unlike house flies, cluster flies do not breed indoors — they enter properties to overwinter, often in large numbers. At Pest Shield, we provide professional cluster fly control using an inspection-led approach to manage active infestations and reduce repeat invasions.

Why Cluster Fly Problems Occur

Cluster flies typically appear in autumn and winter as temperatures drop. They are attracted to:

• Warm buildings

• Light-coloured walls and windows

• Roof spaces, lofts and wall voids

Once inside, they gather in clusters around windows, loft spaces and upper floors, becoming active during warmer spells.

Common signs include:

• Large numbers of flies appearing suddenly indoors

• Flies congregating around windows and light sources

• Dead flies accumulating in lofts or window sills

Because they are not breeding indoors, surface sprays alone rarely solve the problem.

Our Cluster Fly Control Process

1. Inspection & Assessment

A qualified technician inspects:

• Loft spaces and roof voids

• Window frames, eaves and wall junctions

• External elevations where flies are gaining access

This inspection identifies entry routes, harbourage areas and factors encouraging repeated ingress.

2. Targeted Treatment

Based on inspection findings, we apply professional-grade treatments to:

• Harbourage areas such as lofts and voids

• Internal surfaces where flies cluster

• External access points where appropriate

Treatments are designed to reduce existing activity and discourage re-entry.

3. Follow-Up & Monitoring

Cluster fly control may require follow-up visits, particularly during prolonged cold seasons. We:

• Reassess activity levels

• Adjust treatments if necessary

• Confirm control has been achieved

Each visit is documented in a clear electronic report outlining findings and actions taken.

Preparing for Treatment

Before our visit:

• Leave visible fly activity undisturbed for inspection

• Clear access to loft hatches and upper floors

• Avoid using DIY sprays immediately before treatment

This allows us to accurately assess entry points and activity levels.

Aftercare & Prevention Advice

Long-term control relies on prevention. We provide practical advice on:

• Sealing gaps around windows, eaves and rooflines

• Improving loft sealing where feasible

• Managing external factors that attract cluster flies

These measures help reduce repeat seasonal infestations.

Who We Help

We provide cluster fly control for:

• Residential homes and apartments

• Rental properties and HMOs

• Offices and commercial premises

• Managed buildings and estates

Each property is assessed individually to determine the most effective approach.

Why Choose Pest Shield

• Local North East pest control specialists

• Inspection-led, evidence-based treatments

• Professional-grade products

• Clear electronic reporting after each visit

• Practical prevention guidance included

We focus on reducing repeat problems, not just clearing visible flies.

Book Cluster Fly Control

If cluster flies are becoming a nuisance in your property, early action helps reduce numbers quickly and prevent repeat issues.

📞 Call 0191 7166647
📩 Contact us online to request a quote