Originally Posted by OhKay

There was no diarrhea in the box when I cleaned it yesterday, and no odor until this morning.

I put out a clean water bowl (I always give them filtered water) and threw out the food that was out and washed the dishes before refilling them.

He looks healthy and is behaving normally. Like people, sometimes cats just get diarrhea, but I'll keep an eye on him and the box.