I have a female Yorkshire Terrier that I got as a puppy. I also am gone about 9 hours a day. Tiffany has her Kitty Cat sister to keep her company so she's not alone all day.

I dual trained her. She weighs 5-1/2 lbs and female (so she doesnt lift her leg when she goes). That is I trained her to go outside and also to go on a wee wee pad that I keep in the bathroom. If she has to go while I'm at work she goes into the bathroom and does her business on the wee wee pad. Actually it works out great for me because I don't have to walk her in bad weather. She's a Princess and doesn't like to go out in the rain. lol

I kept her in a crate till she was about 1 year old. You can only do that with a small dog though.