I honestly don't have faith in a yorkie ever really being housebroken, (see my previous post from 6-17) they say that toy dogs are the hardest to train and I still have to watch my yorkie who is 5 yrs old like a hawk. Don't give up your baby is still a puppy... about 5 months old right? She will get better as she gets older because she'll have to use the bathroom less frequently. Do you have the pads in specific areas, where you can close her off in that area? Or do you have the pads in various spots? Put the pad in a small room like a laundry room or bathroom and after she comes in from her walk, close her off in that room for about 15 minutes, do that each time and she'll start realizing that she need to go in that area. Make it a habit after the walk and do it consistently.
Also check with your vet to rule out any health problems.
