we have a couple of flies in the house and dp is convinced that it is because the house is filthy (which it isn't - particularly)
I know that the weather is quite mild for this time of the year and I have seen my neighbour swatting flies in her house, so I think it's just an extension of summer, however dp is convinced that you DO NOT get flies at this time of year unless there is a dead rat or something hiding behind the settee.
Can anyone reassure him that in mild weather, flies are quite normal?