It's amazing. This is the first time I've ever given CS to my cats, and the results are very encouraging. Luke, my 2.7 year old neutered male tabby cat got diarrhea again and was getting kind of lethargic. After giving him 2 or 3 three ml dropperfuls of 10 PPM CS, he was wanting to go outside real bad today and was playing "catch" with me the way he usually does with a plastic milk jug cap. He just ran by with Friz - they are playing and getting exercise.
Now I know it really works. I will definitely give them more if they get sick again, and a dose or two once in a while seems like it would probably do them some good. :)