Non-dog folks turn pale at the thought. But responsible dog owners, knowing how important it is to clean up after our dogs, think nothing of reaching down and picking up a fresh, fragrant pile of Fido's feces with our hands. Oh, not our bare hands, of course, but often with nothing more than a couple of millimeters of flimsy plastic between epidermis and excrement. No big deal. Until, that is, one of those handy plastic bags breaks. Intrepid as committed poop-pickers may be, even we will blanche at the thought of . . . well, you can imagine.