I'm posting this for Mom, because she doesn't have an account. As I haven't ever had this problem I thought I would cast out to you all.
Tucker has been doing well at the house, though he has made a vow to chew every valuable in site. ; ) But her question is with his marking habits - he has been with them for a little under 8 months now and marking is still occurring. It's not in the same place, but often the bed, sometimes the bathroom, sometimes the table. He is getting out and walked very regularly with Pearl his female buddy. Any thoughts to illuminate this or what they could do ?