[Retlaw]

Originally Posted by MargaretR

I thought I had got the invasion down to one survivor but I have killed four since.
I have opened a window but have lowered and closed the venetian blind to prevent entry.

Thats no good they get round the edges, or sit & wait to you open the blind again, even a bit of a breeze will movethe venetion blind about enough for fflies to get by. A close fitting fine net curtain is the only way to keep them out.