So it’s that lovely time of year, you open the patio doors to let that glorious warm fresh air in, and along with it comes bloody flies, who then spend the whole time dancing in a circle in the middle of the room. Apart from the obvious - keeping everything shut and boiling to death, or putting beading draping across the door frame, is there anything else that will stop them coming in? I didn’t want to cover the door with beads/netting as it’ll block some light out, but needs must!!!!!!