This going to take a couple of entries to document, in part because that's how it originally played out.
Thursday night, I work late, and Katherine (at Aikido) beats me home. All seems well when she arrives.
However, her arrival wakes the cats up. Billy comes downstairs, asks about dinner, goes to use kitchen litterbox ... and misses.
Katherine was not happy. She got it cleaned up before I got home.
To be continued ...