Saw the original and tried it out. Flies went in, but were also getting out. I recreated the thing in Fusion based solely on the diameter of the original. I moved the holes closer to the middle, made them smaller, and made the tubes longer. I also added thin slats and angled them to further confuse the trapped flies while letting the smell of the bait get out of the jar at the same time. Hope this works for ya!
Remix of Thing 454284 by TheCase on Thingiverse
Category: Outdoor & Garden
The author marked this model as their own original creation. Imported from Thingiverse.