Sorry to here you are having trouble. I had a bird with coccidiosis after being really careful, using disinfectant etc. I'm in UK and we are only able to buy antibiotics with a prescription from a vet. I had 35 birds at the time (number has since crept up), and I contacted our vet who does not keep the necessary medication. Long story but I would need to go to a large animal vet who will only supply treatment for 100 birds (cost about £100). My own vet suggested I sent off a poo sample to see if it was definitely cocci. In the meantime I went to the local feed merchant and bought probiotics to add to water and herbal tonic. Affected bird was very poorly, completely bloody stools, droopy etc. So, we syringed probiotic orally and fed mash by hand and she perked up remarkably quickly. I gave all birds probiotics (Protexin) as a precaution and have been ever since (this happened in July after a very wet spell, bird was 16 weeks). I tried cutting probiotics down to weekends only but noticed the odd bloody poo so now give it daily) I didn't use the poo sample kit at the time as all was well (I had to pay for the kit and analysis up front). I was due to worm the flock last week so thought I'd use the poo test kit first to see if it was necessary. The results were completely free from cocci and all other worms! I couldn't believe it. I will definitely keep up the probiotics now. If you can't buy probiotics where you are then perhaps fermenting their feed would have the same effect.