Quote:
Originally Posted by snowy
They will fit through a smaller hole going in, but need a larger hole trying to get out, I guess. You want to make it small enough so that they'll go into the jar but not be able to escape easily. I used a finishing nail to poke holes in my plastic. Most of them will drown in the water/vinegar solution regardless.
Does that make sense? It's hot here, and I'm afraid my brain is fried. Seriously, though, this works like a charm.
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No, I thought hard about this, and I figured out this justification for it: On the way IN, the alluring scent of the bait draws them right to the teeny hole. On the attempt to get OUT, there's no such "hole here" signal, and it's harder for them to find it.
For sure I see houseflies bumping their stupid heads against my windows all day when there's a door open right next to it. Maybe "go in" is an easy concept for an insect, while "go out" is hard?