The first thing you do if your dog is having problems with incontinence is to have your pet checked by a veterinarian. You need to rule out a bladder or urinary tract infection. Infections usually require medical treatment. An infection left untreated could turn into a serious health problem.
Some breeds commonly suffer from what has been termed "spay incontinence", which begins sometime after the spay surgery. Older dogs also tend to develop incontinence as a function of aging.
Some dogs owners have found, by eliminating all grains in the diet, the incontinence stopped. Most commercial pet foods are filled with grains. You can find grain-free dry foods in some brands of high quality natural dog foods, like Natural Balance or Blue Buffalo.
Holistic veterinarians have had success using chiropractic adjustments, acupuncture or acupressure. Homeopathic remedies also strengthen the liver which controls muscles. There are also homeopathic remedies that can support both the kidneys and bladder, and the use of glandulars is often successful.
There are herbs, like Azmira Kidni Kare, that are useful for incontinence. For more information on Kidni Kare go to: http://www.petabbey.com/
Incontinence is difficult to put up with, but don't give up on an older dog because of it.