Two (2) Bug Posts in One (1) Week?

So I have a dog in the back yard. He has a food dish. The food dish tends to draw critters. Typically, flies are the pests of note, although I have seen an occasional slug. This year, while cruising the aisle of our beloved Wal Mart (without any drinks hanging on the side of the cart,) I came across and impulse-bought one of these little beauties:

If you have any issues with flies, or just like to see crazy stuff, I recommend dropping the $3.97. Insert asterisk here. I believe they also make versions for other creepy-crawlies, such as Japanese Beetles. I brought mine home and installed it on the dog's zip line, at the side of the yard. The internet recommended not setting the trap anywhere you don't want flies eating and/or hanging out. You just snip a hole in the top of the plastic bag, fill it about halfway with water to activate the bait, then hang it up. The bag does the rest.

Within a day, I had numerous ugly little black flies trapped in the bag. After a few days, it was still working, and the idiots were still going in. (They weren't coming out, however.) I did notice that over time, a bag full of dead and decaying flies tends to develop a certain aroma. It was pretty bad, oh, around Friday. My trash comes on Monday mornings, so I just figured I'd tough it out.

I go out last night to retrieve the bag of rotting flies, armed with 2 plastic grocery bags (to double-bag for protection) and a set of wire cutters to snip the small wire holding the bag. I line up my bags, and cut the wire. Second asterisk should be somewhere around here. The next thing I know, the bag (the bag - the important bag - the nasty one) falls to the ground. I'm standing there, holding a pair of wire cutters and 2 empty grocery bags. I guess technically one was empty; and the other had the empty one in it, but you get the point. I then use the snips to pick up the trap, and realize it's a heck of a lot lighter than it had been. Of course it was a lot lighter, since the (up to 20,000, mind you) dead, wet, rotting flies were scattered around my yard.

I call for -PB to run and grab a shovel out of the garage, which he promptly does. Upon my instructions, he starts scooping; and I'm, um, holding the bag. (By "holding the bag", I mean I'm a good 15' away from it.) Short story long, the bulk of them made it out with the trash, -PB used all the antibacterial soap in the house, and the back yard smells friggin' nasty now. I don't know if I want it to rain, or if that would just make it worse.