Willie, my male Yorkie isn't neutered and LOVES to mark everything. So in order to keep down odor (and my husband), we use belly-bands with a changeable pad. When he stays in the doggie bedroom at night, I leave the band off, but if he's running at will in the house, we use the belly-band. Willie's is about four/five inches larger around than his waist and about three/four inches across. I have them in cotton, flannel, some are custioned, etc. Several YT members sell them. Maybe you could purchase one and then make your own if you sew.