Garlic has many health benefits, I give my dog a bit of garlic with dinner, my Homing Pigeons 1 teasp of minced garlic per gallon of water 1x week, but I do like this option better for chickens. An interesting side benefit, garlic in the system seems to naturally repel parasites, the theory is mites, lice & fleas do not care for the taste of a body that eats garlic.I haven’t given my chickens anything like this but it seems like it would be really good for them! This one has really good reviews!
Fresh Eggs Daily Brewer's Yeast with Garlic Powder Chicken & Duck Feed Supplement 1LB https://www.amazon.com/dp/B07C6X65L2/ref=cm_sw_r_cp_api_fabt1_G1OQFbKS8PY04
Thanks for sharing, I'm ordering some!