Cluster Flies Treatment & Control Services in Reading

Cluster Flies

Have you noticed a large number of flies around window frames or in the loft during the Autumn months?

Our professional pest control technicians can carry out treatments for cluster flies in domestic properties in accessible lofts and/or affected window frames.

Our per visit costs are as follows:-

  • Fumigation of accessible loft £180 including VAT, subject to survey
  • Insecticidal treatment of affected windows: £72 including VAT for call out and first window and then £25 for each additional window.

Detection: Visual sightings of large numbers of adults flies in the Autumn especially on warm sunny days.

Favoured location for cluster flies: numerous locations, but usually in lofts and roof spaces. South-facing windows and walls often

The most effective time to carry out treatments for cluster flies is during November or December.

Call us on 01491 628 200
Send an enquiry form

Reasons for control

Cluster flies are not damaging to property when they enter buildings in the autumn purely to hibernate over the cold winter months. As mentioned above they feed on decaying vegetation and earthworms. Cluster flies are not to be associated with dead animal bodies, faeces and the resulting maggots. Fibre glass insulation material in lofts can look unsightly if covered with the bodies of flies that have not hibernated successfully although its insulation properties will not be altered and no damage to the roof structure will occur.

If the loft is home to a hibernating colony of flies, first floor lighting diffusers or sunken spotlight lenses can become full of dead or dying flies. This often occurs in houses where the loft area has been converted into a living room. In most buildings built after 1950, the external roof covering has an under felt layer. Cluster flies can successfully hibernate undetected between these two layers. Often cluster flies can be seen basking on sunny grassland or resting on south facing walls of buildings. Cluster flies, like birds, return to roof spaces previously occupied so re-infestation is almost inevitable.


The only option available is to control the number of flies by either:-
Insecticidal space spray (N.B. if bats are present in your loft/attic this will not be possible). Number of visits required will depend on the time of year the treatment is carried out and also on weather conditions (mild autumn) as to when flies migrate in to hibernate.


Contact us today for a quote

Call us on 01491 628 200 for a quote, our prices are based on whether it’s a one-off visit or you require a course if visits.

You can’t go wrong with our reasonable price structure, alongside top-quality pest control services with no hidden charges.

    What Our Clients Say

    Mrs H


    Fantastic service. Responded immediately, competent staff and reliable.

    Common Insects and Rodents

    Below are a list of some of the more typical rodents and insects we provide pest control for.