Senoufou, don't you folks over there have window screens yet? They keep out flies, mosquitoes, moths and all manner of critters, including spiders!

When my grandfather moved his family from Montreal to England in 1924, he discovered with disgust that window screens were unknown, although they were standard equipment in Canada. Over 21 years in England, he made a full set of screens for every house the family spent more than a few months in (they moved frequently due to his work).