Lately one of our cats has started peeing right outside of the litter box. My husband keeps the litter pretty clean, the litter is the same, and both cats poo in the box itself.
We got one of the litter boxes that looks like furniture a week or two ago so that we could put a pan thing to catch the pee so it won't go on the floor. There is still pee that is caught near the front of the litter box in the litter catch mat. My husband thinks that maybe one of the cats is "missing thier mark" and inadvertently urinating outside the litter box.

The letterbox is on hardwoods (we have them throughout our house) so the concern is to stop the activity before we damage the floors.

Any suggestions?