I would recommend a doggy door: http://www.carpetrenovations.com/blog/pet-stains-odors-products-blog/how-effective-is-a-doggy-door If the problem persist here are some spot cleaning tips: http://www.carpetrenovations.com/blog/pet-stains-odors-products-blog/how-to-remove-pet-urine-from-carpet%3C/p%3E (http://www.carpetrenovations.com/blog/pet-stains-odors-products-blog/how-to-remove-pet-urine-from-carpet)