Cluster flies | FAQs | PEST UK

Pest control services for Berkshire, Hampshire, Oxfordshire, Buckinghamshire, Middlesex, Surrey & London. Established 1985.

Our Frequently Asked Questions (FAQs) about Cluster flies

Frequently asked questions about cluster flies:

Cluster flies emerge in the summer or autumn. Often in large numbers, they enter houses to find some warm places to hibernate.

An insecticide spray will get rid of cluster flies.

Unless disturbed, cluster flies will hibernate successfully until temperatures begin to climb during the Spring. It is not uncommon for them to leave a scent that can encourage more cluster flies to return the next year.

The life cycle of the cluster fly is between 27 to 39 days.

If you are seeing flies swarming in your house all of a sudden it’s likely to be a sign of an infestation inside or nearby your home.

With cluster flies there is usually no food source, they are gathering in masses inside your home to hibernate.

An insecticide spray will permanently get rid of a cluster fly infestation. However, this does not mean that a new infestation won’t enter your home the next year.

Unless disturbed, cluster flies will hibernate successfully until temperatures begin to climb during the Spring. It is not uncommon for them to leave a scent that can encourage more cluster flies to return the next year.

Cluster flies have genetic memory that is passed on to their descendants so their descendants go back to the same place to hibernate.

You can get rid of cluster flies with an insecticide spray.

Fly spray will kill cluster flies but is unlikely to be strong enough or enough volume of the fly spray.