I have heard that adding this to the water not only is good for the chickens, but also keeps the slime from growing. I'm not talking nasty green algae slime, but the thin clear slime in between scrubbings. My grandfather swore by the stuff as well as my aunt. He had us drinking it, putting it on rashes and sunburns too! There are all sorts of benefits listed on line, but I'm just curious to hear from you all! This website is the chicken encyclopedia!