I'm actually asking this question for my mom. Her cat, Hope, that she got almost two years ago has for the past many months to maybe a year been pooping outside her (covered) box. She pees in the box and it's cleaned daily. She tried adding another uncovered box but it didn't help. I've had mom pick up the poop and put it in the box, only to have Hope cover it with litter and still poop outside the box. I've also had mom vary the amount of litter she uses to no effect. She does it a few feet away from the box in the middle of the room. Nine times out of ten she does her pooping in the middle of the night, so it's not a privacy problem. There also used to be a screen blocking the box from view for added privacy, but it made no difference. She gets a check-up every year and is healthy and happy. There are no other cats or animals to cause stress. I'm completely baffled. Does anyone have any thoughts on this? Possible reason or solution?