Wow we have to much in common
I woke this morning to find that Jasper had pooed on my daughters carpet/rug/throw in her bedroom this morning! I have been blaming our dog and poor thing has been kept in a kennel so I can "retrain" him! All along it has been Jasper, I honestly cant tell the difference between their business! I have changed my dogs food recently so I just assumed it was him because of the change. Just a couple of days ago I walked into my kids toy room and it was saturated with pee, EVERYWHERE! I can, however, tell the difference between their pee! So I don't know if one is having accidents because the other one is, or if Jasper has decided it is uncomfortable in his litter box
I would try to nip it in the bud as soon as you can! If it becomes a habit(I am terrified of this) then it will be hard to break! I have also bought a new litter box and put their old litter in it and that is the one he uses now, I don't know if I have thrown him off by changing litter or what....sigh........ it is a mess! Maybe if they like the covered box, you can replace the one you have that is open with a covered one?