Abbey is trained to potty outside but whenever we leave her for extended amount of time I place a pee pad down for her. My problem is that she misses half the pad or it leaks.I purchased a litter box for dogs and the pee pad fits exactly in it. I left it out in the bathroom with pee pad in it and when we came home, Abbey had done her business on the floor!I have introduced it to her when she rang her bell to potty outside and I have taken her to pee pad instead but she refuses to use pee pad in or out of the box when we are home. I am wanting to use this as a back up for winter when it snows, so does anyone have any advice how I get Abbey to use the litter box? Thanks!!