Is there an effective treatment for fecal incontinence?

Depends on cause: There are many causes for fecal incontinence ranging from nerve injury due to diabetes or trauma from childbirth. The treatment depends on the cause. Generally you want to reduce or eliminate things that increase colon motility such as caffeine & add enough fiber to make your stools formed and firm since loose stools are harder to control. Pelvic floor training can make the muscles work better.

It takes persistence: First line therapy includes a high fiber diet, lots of fluids, probiotics and lomitil. Avoid foods that cause problems for you. Consider pelvic muscle rehab treatments. Sacral nerve stimulation with an interstim implant is very effective if conservative treatments fail. Check interstim website for a local provider.