Hi, new kitten owner to 12 week old kitten sisters. They have been home with us for 1 week now. Initially they were amazing with their litter tray but over the last couple of days one of them has started to poo in the corner of the living room occasionally. She mainly uses litter tray but occasionally does this.
The litter tray is cleaned regularly and poo picked up from tray as soon as they have done one.
I don't understand why she does this sometimes. Can anyone offer advice please?
Thank you!