Thanks for recommendation. I ordered a bottle.I use a supplement in my chicken's water called Ropa Poultry Oregano Oil + Supplement. I found the best price from My Pet Chicken. My chickens love it and it keeps their water fresh, but I don't use open waterers, only nipples or cups on buckets. https://www.mypetchicken.com/catalo...no-Oil-Supplement-see-size-options-p1374.aspx