We often have the back door open, when weather is reasonable, but I hate having flies in the house, so I use one of those magnetic closing fly screens between the two outer back doors.
Very effective it is, at keeping them out, despite the poor basic design. I put it up in spring, then usually remove it about now as the weather cools down. I in fact took it down two days ago, since when I have been pestered by them in the house.
The bad design - They are designed to be fitted in place via double sided Velcro strips, which could not possibly keep the two mesh panels, split down the centre, in place for long. Last year I made up a frame from 10x10mm to trap the mesh, screwed against the door frame.
An even better idea, would be a single panel, rather than the two panels parting down the middle, pulled together by magnets. A single panel with magnets down each of the sides and attracted to magnets down each side of the frame. Supported by a single batten along the top.
Very effective it is, at keeping them out, despite the poor basic design. I put it up in spring, then usually remove it about now as the weather cools down. I in fact took it down two days ago, since when I have been pestered by them in the house.
The bad design - They are designed to be fitted in place via double sided Velcro strips, which could not possibly keep the two mesh panels, split down the centre, in place for long. Last year I made up a frame from 10x10mm to trap the mesh, screwed against the door frame.
An even better idea, would be a single panel, rather than the two panels parting down the middle, pulled together by magnets. A single panel with magnets down each of the sides and attracted to magnets down each side of the frame. Supported by a single batten along the top.