So a friend of mine tells me that a little beer left in a bottle and set outside does wonders .... Yes, I forced down a large amount of that MGD in the name of science...
The nasty little insects seem to get intoxicated while sitting on the lip (fumes maybe?) then they just fall in. I suppose there are worse ways to go and PETA should leave me alone. Meanwhile, a typical fly sheet was hanging near by, with only 1 victim.
So there you have it. Got a guest's left over crap beer in the fridge? Now there's a use for it. This collection took lass than 24 hours, hard to tell from the shot, but there are no less than 30 of them in there.