Sigh... that's just one person's opinion, it's not a proper study. DE is huge waste of money because it treats nothing (been there, done that). Been reading posts for four years now from people that think these things work, but not one person can produce real evidence that it does, and sadly, many people find out the hard way that it doesn't.
Wazine only treats roundworms, so what do you do about the other worms?
Note that garlic can be toxic to birds, so those that want to feed it should probably consult their vets first.
Wazine only controls roundworms. It doesn't kill the worms that carry blackhead (cecal worms). Wazine is not sufficient as a chemical wormer for peafowl.