A second litter box in the bathroom would require daily scooping and careful sweeping as the litter gets tracked everywhere within six feet of the box. That makes it more of a maintenance issue than the occasional pool of cat pee in the bathtub that I can rinse down the drain with a 30-second blast from the shower head, which is the hand-held kind on a long hose.
More snow today, so I’m not in any hurry to leave the house.