'That being said, with so many cats in the house, it may be strictly behaviorial. you vet might be able to give you some guidance here too. You didn't mention how long your sister's cats have been in the house - from day one? or just recently? Siblings long separated will have no idea they are littermates - they are all just cats who have to jockey for position and territory in the house. Any spats between cats?'



Oh, sorry, I forgot to mention that. I haven't seen any spats. Lusifur and Mittens used to always be together, but now Mittens, always is in the litterobx. Last time I checked though, he wasn't. I'm going to look for him in a second but I doubt he went into a place where he will get hurt. Spartikis is just as shy as Mittens is and Dora is crazy and outgoing. I haven't noticed any spats between them. In fact, Ihaven't noticed any spats in any of the other cats.



No, there is no rug by the wall. There is a newly put in wood floor down there and new walls put in by there but no rug. There is, however, a rug by the fireplace.



Thanks, I'll look into the products you mentioned and will consider moving a current catbox (or buying a new one and putting it somewhere). I'm trying to determine if it'll confuse the other cats...



Any other tips on fixing this problem?

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