I am not a picky cat. I require very little. Daily meals, a warm place to sleep and a box where I can do my business. I have noticed a new change to this box. I am NOT happy with it. The soft sand I once comfortably dug my paws into has been replaced by large chunks of pine. I see what you are trying to do. The white cat always arrives with the box of pine. You think the "natural" litter will be good for me. But it is not good when I boycott the pine. It is not good that I haven't used the box all day. I refuse.
This is the face of a cat on a box strike.