I have questions about alternative deworming ingredients and products. Mr. Rowland encourages using other dewormers in addition to the basic Ivermectin, Fenbendazole, and Pyrantel, to, in a sense, mix up the frequency and catch the worms and parasites off guard. There is a good list of deworming ingredients in his Worms Are Killing You book, and there are many available in different mixtures at health food stores and on Amazon. Which ones are best? Which ones should be avoided? And I already know of a few that are just scams. How do we avoid being scammed?