TWRoO on 25 July 2012
This is the UK.... not many people have Air Con (which is why my windows are wide open) simply because for the 3-4 weeks a year it might be needed it would be a ridiculous expense to have it installed in more than 1 room (except little portable things, but they aren't great and also require floor space, which UK homes are sparse on, and an available plug socket) as our houses are made of bricks, including most inner walls.
Similarly I don't think I have ever seen a house with window screens other than the wooden slat kind (which are more of a decorative feature than anything else)
Generally I swat anything like a fly, and bigger things like moths or crane fly get caught and chucked back out the window.
