What is this? Part 2

It's to repel flies. That's according to at least six of my well-informed readers. The hanging, liquid-filled zip lock creates a feeling a movement, that chastens houseflies. A couple of buyers linked to a site called straightdope for the details (www.straightdope.com).

The brick pile is vanquished, stacked neatly and subordinately against the garage. Plus arch-enemy bougainvillea has been humbled, made to fear my pruning shears. So what now? Once I finish painting the tree house, I hope to stucco the concrete block wall, so it doesn't look like, well, concrete block.
My first open at 1522 S. Hobart was well-attended and I'm planning another Sunday soiree, noon to five. Yet more images of Hobart.