So glad to hear it's going good for you!
From what I've read in various places, garlic and dogs do not mix. I don't know about other animals; but...dogs = no no for garlic and onions.
Just the chickens are getting the garlic and cayenne treatment. We do give our dog garlic for flea prevention, but not this time of year. I'm not sure he'd like the cayenne though. He'd probably still at least try it. I've had all kinds of dogs and this blue heeler is worse than a labrador for eating absolutely anything.

Yay! You could also put a sprinkle of Oregano or Thyme in there as well. They are GREAT health builders/preventives.
Garlic is fine for dogs and chickens. Onions? Not so much. I have always given garlic to my dogs.
I keep reading about the oregano and thyme. I don't have thriving plants of these in the garden (hopfully in a couple years) so I don't want to use them constantly because of the price problem. what would people reccomend? a couple weeks course every few months? add it in once a week? once a month? Same with the pumpkin seeds, I haven't been able to find them for a price that I feel comfortable just adding them to my feed all the time (althogh I would love to, they're so nutritious as well as being a natural wormer) how often would you give them? and at a rate of what? a tsp per pird per day mixed into the ration? Less? More?