Dustsucker

We used to clean these buildings by hanging a scaffold for guiding men with powerwashers and squeegies.
Now, we release Dustsucker Beasts on the ground, and they slide up the building to the top floor, leaving a streak of clean windows and bricks.
The trainer then leashes each beast, rides the elevator back down, and starts again.
It takes a third of the time and, when you consider insurance costs, much cheaper.
Until some idiot left a window open and wanted to pet a Beast.
So furry, so cute.
So acidic.
Inside rubber gloves, the trainer’s burnt, scarred fingers clench.