I didn't even have slightly wet conditions. My conditions are under a roof in my barn. Dusty dry even if it rains for a week. I have been treating everything. Not just the sick ones. None of the chicks inside are sick. I brought one inside from the main coop of big chicks and lost two of them but they all seem to be doing great this morning. The chicks I'm losing are 1 month to 3 month old chicks that are all outside in the barn. I got the 9.6. Is it cc instead of ml?Doug, did you get the Corid 9.6 liquid solution? Dosage is 9.6cc per gallon of water for 7 days. Or 4.75cc per 2 quarts of water for 7 days. [COLOR=333333]If you have coccidiosis in some chicks it's better to treat all of them, so the healthy ones don't get sick as well. They can pick it up very easily. You don't need seriously wet conditions for coccidiosis to get going. Just having a bit of wet litter in your brooder and coop can set it off. And that chick you introduced, that you said was sick? How and where was it kept? [/COLOR]