If your dog is marking or persistently using the same area of carpet to urinate, you can use essential oils on the area such as eucalyptus, cinnamon and sour apple to deter them from using the same area. The smell will be good to you, but dogs don't like them. Using only a few drops diluted in water and delivered through a spray bottle should solve the problem. Also has info on getting rid of stains and orders.
Safe Essential Oils for Dogs Essential oils are good to have for the treatment of a wide variety of dog health problems - from flea infestations, motion sickness, to arthritis, and more. Note that not all essential oils are safe for our pets. This page gives you a list of some safe and beneficial essential oils that you can use on your dogs.