I think it's usually a little cheaper (after shipping) on Revival Animal. DO NOT get the activator (citric acid) unless you will be using the oxine to disinfect an empty building where there are no animals present. It is safe to use with animals only without activator.
Oxine, from what I understand, works just as well at bleach and is safer to use than bleach, so why would you use bleach when you can use the oxine? Oxine is a disinfectant.