I'm caring for a stray kitten about 5 weeks old. He has chronic diarrhea because he's still adjusting to the kitten food. The vet suggested not changing the food now because it'll just create a new problem and that he'll soon adjust to the food. The bigger problem is that he doesn't seem to have any interest in using the litter box. When I put him in it he knows what to do, but he never seeks it out. In most cases (when I can't place him in the box) he just poops wherever he's sitting at the time. I don't know what to do. I'm thinking he can't make it in time because of the diarrhea. Beyond that, I'm clueless why he refuses to litter train. Please help! I appreciate all and any advice.