I have read both. That garlic isn’t good for them but more often than not I have seen that they can have it. I do give garlic to mine every once in while and they eat it. I have also seen the same for onion. I don’t believe though that eating it will harm the chickens, I believe it is more because of the taste it can give your eggs. I haven’t had the problem with taste but I also don’t give a lot of any of it. It’s more in like oats from oatmeal.If your birds are like mine, they will eat only what they want if dry, and leave the rest. Probably better as mash. My chooks gobble that up! I would add all that as I felt like it. Have a bunch of dried oregano from last season. Is garlic ok for them? I thought onions and garlic are a no no, or maybe that's just dogs.