Well, to be more precise, it's not *literally* a kitten that's doing the urinating here, but rather two full grown cats. (The long story is...)
My intention is to modify (or replicate) the decor mats currently being used to protect the carpet in our hallway, such as to _stealthily_ incorporate the moisture-sensor mat. This will be not only for the learning needs of the offending cats, but also to minimize the likelihood that a certain human might otherwise object to the 'operation' without giving it time to reach success. For as most do-it-yourself 'engineering' goes in my experience, anticipate plenty of trial-and-error based refining and tweaking before it performs "in the real world" for me as conceived.
Ken