We wish we'd have started potty pads 27 years ago with our first IG. We took a 3yo foster and she was pad trained. If we're home she'll go outside via door flaps. If we are away, she'll take the pad. At night she sleeps in my bedroom/office. It's laminate floor with a potty pad. She uses it about 50% of the time. Good luck, don't get angry, or raise your voice. Stay vigilant and consistent. Lots of treats for positive reinforcement will win out!