Fruit Fly Trap for Shotglass

Fruit fly trap that fits a shotglass. Add some vinegar, and some fruit that peaks out of the fluid. Just like that you're killing a bunch of flies.

I used an O-ring to get a great seal. It might work okay without, but the o-ring helps a lot.

O-ring size 568-219 (1.296 x .139)
Any durometer works, but lower durometer is slightly better

STEP File included for free CAD use, feel free to modify anything you'd like. I cannot share the main CAD file.