Leave your name and phone number below for a free call-back to resolve your Berkshire pest problems. Someone will get back to you within 10 minutes
Want to speak to an expert?
Call: 0800 051 8640
Cluster flies are usually between 3.5mm and 6mm in size, and they have reddish eyes. These flies gather (or cluster, hence the name) near building holes, in roof spaces and in lofts. They gather together around autumn, to hibernate, and they come out of hibernation in spring.