Joeann, welcome to you and your new pup. I know you are excited! Can't wait to see your precious little one. Your YY's are on the way
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My three are potty pad trained. I use washables - I got mine free from a company that supplies hospitals. They are fantastic and save a bunch of $$ and hopefully I am doing my small part to help the environment.
There are a lot of different ideas about potty training. Some crate train, others don't. I'm on the "don't" team. I just feel like it's wrong to put a pup in a cage for hours. My home is as Yorkie proof as I can make it and with little ones running around the house, I do confine them to one room which has potty pads and is extra safe.
I'm sure you will get a lot of fantastic ideas!