We trained Kacee to ring the bell to go outside. At night and in inclement weather, we go in the attached garage where she has pee pads. I leave a couple of pee pads in the house in case we are gone or can't go to the door when she needs out. She hasn't had an accident since she was about 3 months old, except for a couple right after she was spayed. She'll be 8 months old Friday, the 9th! I love it! Of course, I still don't let her have the run of the house and I don't plan on doing that until I'm quite certain she won't sneak into another room to hide it.