If you are interested in reading this post in more detail, I recommend this article by the American Association for the Advancement of Science, "The Benefits of Detoxing". There is also a good review on the American Journal of Gastroenterology. The information in the review and the page on detoxification are from people who are experienced with detoxification.
I would like to talk briefly about the process of detoxification. The detoxification process is very similar to other processes, but is very different from food detoxification. The processes used by other detoxifying foods have a lot of calories, so the detoxification process is often more complex. Many people would not be willing to do it. There are a few detoxing products for your dog that I've found. They are the ones on this page. There is not much information on this page, and very few people actually know what they are talking about when they talk about a dog's diet. There are no "clean" or "cleaner" diets out there, because each person has to do their own analysis of what is best for the individual dog. The goal is to make sure the diet is the most beneficial and nutritional for the dog, and not to be restrictive. I hope that this page will help you with some information that you may not have been aware of.