Never heard of this before! I do worm my dog regularly but have never worried about other internal parasites. Do you have a dog with a particular problem...?
I don't have a dog with parasites. I just thought it was an interesting thing when I heard about it. I once considered selling baked goods as a side income, and someone suggested I do pet treats, as well. I know some people consume (and have their pets consume) diatomaceous earth sometimes as a preventive measure. I just don't know if it actually works, because I've seen debate. Some people swear by it while others scoff.