My Tess is outside trained. In fact, I left her in the house for 5-1/2 hours today and she didn't go once!! (I'm sooooo proud of her!!!!!!!!!) She is doing fantastic for only 4 months. She doesn't mind going out in the bad weather. She'll sit in the rain as long as I let her. I can't wait to see how she reacts to snow. I was going to try to pads, but it seems as if it's just another way to go "in the house" and I wanted her to learn that she only goes potty outside.