The Bluebottle

 
  
 

Appearance

 

Larger than a housefly, adult bluebottles can reach 15mm in length. The name comes from the bright metallic colour of the abdomen although the head and thorax are grey.
 
They can also be identified by their large red eyes and the many bristly hairs on their body and legs.  
 
 
 

Life Cycle

 

These flies are pretty amazing.  They only feed on rotting meat which they can smell from over a mile away!
 
Eggs are laid in the flesh where the female feeds.  Hatching within day, the larvae then continue to live from the decaying flesh for a week before finding suitable harborage to pupate.  Ideally, this would be soil to burrow into but can be cracks and crevices if this is absent.
 
A week to ten days later sees the emergence of the adult flies ready to mate and restart the cycle.
 
 
Treatment
 
The fastest treatment  is to locate and remove the food and breeding source.  Occasionally this is not possible such as when a rat has died under the floor.  In these circumstances, specialist de-odouriser blocks can be laid to mask any smell and alighting surfaces wiped with an oil based insecticide.
 
In commercial environments, housekeeping plays a large part in avoiding infestation by disposing of waste meats and carcasses quickly.  Electric fly killer units and proofing screens can also help in controlling ongoing problems.

 

 
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