Safe for Use on All Animals: Because HOCl is naturally occurring in the body, it's the smartest choice for all animals. HOCL can be used on animals big and small at any stage in their development. HOCl is non-toxic, chemical-free, non-irritating, and gentle enough to be ingested or licked by an animal. Its gentle nature makes it ideal for application to areas around the eyes, nose, mouth, or ears, all of which can generally be difficult to care for because of the possibility of causing your animal additional pain.