I ran out of litter one day and used a different low-grade brand just until I could get some more. The low-grade litter was only in the box for 1 day, and one of my cats refused to use it and pooped and peed outside the box all night. The next day I bought the litter I normally use but he still refuses to use the box. He always goes right outside of it. I’ve showed him the litter (the kind he’s used to) multiple times and it’s not working. I’ve never had problems with him not using the box before, and I’m not sure what to do. For the past couple days he has started urinating in the box again but is still pooping right outside of it.

Here’s a little more info:
– I have 3 cats…the other two are still using the box fine
– All the cats are about 2 yrs old and have never had problems sharing boxes
-I have 3 different boxes in different spots in the house
-I have been cleaning the “accident” spots with nature’s miracle so the cat doesn’t go back to it