I live in a condo and don't have that much of a back yard, so I use a litter tray with Yesterday's News paper litter. The breeder started her on the training so she gets the concept of it, but every once in awhile if she's away from her box (in another room) she'll start to squat and I immediately pick her up and put her in her box so she can finish. When she's finished, I praise her. I am in the process of training her to go outside now.
I have tried the pads as well but it just seemed like more work and made a huge mess and smelled up my apartment, unlike the paper litter (which absorbs most of the odor). I change it every other day or so, and immediately pick it up when she goes #2 so there is little maintenance involved.
Let me tell you, it sure is nice if I am working late and just want to relax in front of the TV and Bella will just go right over to the her box and relieve herself. It gives me peace of mind when I am gone too, that I won't come home to a disaster zone
New mom to Bella Mia, born 2/11/07