Innovet Pet Products Tracerz for Blind Dogs (5cc of Path Scent Oil ONLY) Primarily used to help blind dogs from getting lost and reduce anxiety Helps minimize the frequency and severity of collisions Helps blind dogs regain confidence and to assist in developing a mental map of their environment Contains proven scents that dogs are best at detecting. 5cc's of path scent oil only For places where standard Tracerz markers cant be used