After completing the program, my digestion is much improved, but I still have an annoying symptom of itchy ear canals. Would you advise using Formula SF722 at this point as I continue to follow the diet, taking Pure Probiotic, Pau d'Arco tea, etc.?

Sounds close, but no cigar. The itchy ears, while part of the holistic “being-ness”, is not specifically addressed with the program, but the stage is set for permanent improvement. Sometimes those "remove areas" (i.e. - toenails, ear canals) require a little topical intervention in conjunction with the program. The SF722 coconut-derivative undecenoic acid is helpful, but may require a companion or two, often caprylic acid (another coconut derivative) and oregano oil. I think it’s fine to add to your efforts. For the ear canals, many things are possible, but be gentle, as the canals are sensitive, and the tympanic membrane is even more sensitive. So dilute and test: tea tree oil or garlic juice, Tai Ra Chi, or grapefruit seed extract, vinegar, hydrogen peroxide, etc. Go ahead and knock the ear fungus out.