You're killing me with the "natural" thing, lol. Where are the studies that prove it works? And find me a vet that says it's okay to use onions and/or garlic since both can be toxic.
I do think your advice regarding the Safeguard for the adult is spot on. The month old chicks can be wormed, but they probably don't need a five day treatment until later... Just one day, then ten days later should suffice.
Dose for adults or chicks is 0.23 ml per pound orally.
-Kathy
I don't use natural wormer either. In my opinion shouldn't even bother with the natural wormers. I only keep the knowledge in case I run into organic or natural farmers I can give them advice on it. I know a few organic farmers that I trust and they use garlic, onions, pumpkin seeds, and oregano for common illnesses in their poultry. Birds usually know how much of something they need. If they don't need it or want it they usually don't touch it.