I have a half a dozen hens with poopy butts from diarrhea. They act fine -- none are lethargic -- and they seem to be eating and drinking. I originally had about a dozen (out of 21) with poopy butts, but after two rounds of Valbazen, 5 days of Corid in the waterers, 5 days of vitamins and electrolytes, and a round of pour-on ivermectin (for depluming mites), half of them seem to have cleared up, but the rest still have poopy butts. Those treatments were over a 15 week period, so this has been going on for a while. The poop was -- in some cases -- very watery, but I didn't see any undigested food in it. I haven't seen any watery poo lately, but I see dark brown pudding under the roosts in some spots. I wash the poopy butts and blow dry them, but as soon as I put them down, they squirt a new dark streak down the fluff. They free-range over an acre of property, and while I had put the Corid in all the waterers, they still find water to drink -- puddles, water cupped in a fallen leaf, water captured in a bucket lid, et al. There is no way I can guarantee that the ONLY water they can drink is from the waterers. I thought I'd seen a post where someone gave the dosage for mixing Corid in a solution that can be given to them orally. I'm more than happy to give them each a squirt in the mouth each night so I can be sure they each get a daily dosage. Also, does my description make anyone think of other possibilities?