Here's a video describing the system that fell apart which had been working for a long time to keep these flies out of north america https://www.youtube.com/wa

Here's a video describing the system that fell apart which had been working for a long time to keep these flies out of north america https://www.youtube.com/watch?v=Olj8arvfYj4 https://www.youtube.com/watch?v=Olj8arvfYj4