I have a 7 year old terrier mix dog. She was once well trained to pee outside. During the last year she has started peeing on the carpet again. She has access to a dog door throughout the day and night and I take her out regularly, however she chooses to go pee on the carpet. I rarely catch her in the act. She has ruined the carpet in my old house. The smell is terrible. 3 months ago I moved into a new house. She continues to soil the carpet a couple of times a day. I desperatly need her tp stop peeing inside. What am I to do?

Have you had her in to the vet for this? First thing to do when a house-trained dog starts having accidents inside is to rule out a medical problem.