Dog repellents are specifically forumulated for use on dogs. As dogs eyes do not contain tear ducts, a standard pepper spray designed for use on humans, if used on a canine, could cause permanent damage. Dog repellent sprays use lower Oleoresin Capsicum percentages while still maintaining the same effects as that of pepper sprays designed for use on humans. All canine repellents sold by Pepper Sprays Etc. are EPA approved.