You might try using these to help with the problem. http://dogloverboutique.com/pd_black_satin.cfm
I got one for my Yorkie stud Mac and it works like a dream. Plus the satin helps keep the hair from knotting up under it. Supposedly if you use it faithfully after a time they are supposed to untrain the marking because the dog doesn't like the wet feeling. I haven't been using it that long so I can't say that it will help with retraining but it helps with the marking. The urine goes onto a pad that is placed on the tummy so it doesn't go on the floor, furniture or people.
I got one for my Yorkie stud Mac and it works like a dream. Plus the satin helps keep the hair from knotting up under it. Supposedly if you use it faithfully after a time they are supposed to untrain the marking because the dog doesn't like the wet feeling. I haven't been using it that long so I can't say that it will help with retraining but it helps with the marking. The urine goes onto a pad that is placed on the tummy so it doesn't go on the floor, furniture or people.