Yes, they are doing well - I had to take the grooming mat back as it was too small for the den and too large for the shop bought scratch post, so bought one of the arches, they were half price. She has gone through it both with and without toys, but not convinced her fur is getting close to the brushes. We are trying the second litter, I wasn't sure at first as it is a very dark grey, but it is a fine sand like litter and it doesn't seem to be tracking that much - or if it is, I can't see it or feel it. These seem to be like Lucy, will just use the tray regardless of what litter I put in it. I did notice when Coco was eating off my hand the other day that she has blondish hairs running through her tail.