My 13 yr old cat is peeing on the edge of the cat box, and it wets the outside of the box. I have changed the litter to the pellets, and Im thinking that maybe she doesn’t like them. I just bought a new box, just like the one I had before, and the entrance is wide, but low.and I never had a problem before. Maybe I should change the littler to a soft wheat, I don’t want to use the clay, I want something more natural. Help……..