I have a foster litter that just crashed from coccidia. They got albon as soon as I noticed something was wrong but they went too fast. They are around 12-16 weeks old (don't have their birthdays with me). Must have been exposed RIGHT before I got them. One however is perfectly fine. He's on his 4th day of treatment, however, but never showed any symptoms, still eating, same personality. I'm new to this. I read it takes 8 days to show? When can he be exposed to other cats? How long does it take coccidia to die from the environment he's in?