As winter begins Cluster Flies start to enter homes via small cracks and unsealed openings. Once inside they congregate, or cluster, by the thousands in attics and roof voids where they will overwinter and then depart the following spring.
Proofing for cluster flies is virtually impossible.
Having cluster flies has nothing to do with the properties cleanliness, they just choose an attic and will then continue to use it year after year until the cycle is broken. The cluster fly itself is nothing but a nuisance, but large numbers of flies can mean creepy crawlies like beetles could be attracted, plus sharing a property with a huge swarm of flies is not that appealing to most people.
Exopest Ltd will treat the cluster flies with residual insecticides, breaking the cycle so that your attic should be cluster fly free after treatment and the following years.
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