You know - I wish *somebody* would invent some sort of three sided plexiglas insert for litterboxes. I can see it in my mind. It would fit down inside the box and prevent all the litter flingers from making heaps outside the box, the pee and poo would stay off the walls, and the kitties who don't like enclosed boxes would still be somewhat "contained". Maybe it could even have a fourth side with an opening
Maybe I will invent it, patent it and make a fortune

Shall I have my engineering son design a few prototypes for home testing? Any volunteers?