I got Frosty at 10 weeks. She's had very few accidents in the house. Most of those have been when she's had tummy upsets and between us - not quick enough to get outside. When she was very small, I was very dilligent about taking her out often, especially after waking, sleeping, eating and before bed, and not letting her back in until she'd performed. If it was raining or cold, I'd carry her to where I wanted her to go - so her feet would already be cold and wet...

And no getting back inside until she'd performed. As long as it took. And performing gets a magic command word - so she knows what she needs to do when I say it.