fly infestation

[LandUnderWave]

hoping someone can advise

really just since yesterday had a total infestation of what look like bluebottle flies

killed i swear about 50 yesterday and today seems to be going the same way

seem to be concentrated in dining room on blinds/windows, a few around kitchen windows too, really none elsewhere

no corpses as far as i know in house

have gutted kitchen, removed all open food etc

am slightly freaking out so hope someone can help

Honestly the one and only time this happened to us there was a long dead mouse behind a cupboard. Have you got a cat that brings them in?

Do you live near a farm that has been muckspreading?

Just had v illuminating conversation with dh - apparently he saw a mouse
a few weeks ago, trapped it, but it then escaped - I imagine that is the cause!
Thanks for the replies. Rentokil coming with mouse poison tomorrow

LandUnder - are they like small blue bottles?

We have a plague too. I think they are coming in via cracks around window frames.

Yes small bluebottles exactly. Yuck yuck. However dhs confession might explain things here!