I am completely sure that the Vetericyn works. In the past two weeks the vet has been so amazed at the speed in which he is healing. I also had a rash on myself that wouldnt go away. I used Vetericyn spray on it a few times and it is finally going away. Also Comanche had a sore on his nose from the muzzle we have had to keep on him (he keeps chewing his wound) - I used Vetericyn spray on it and it once and the next day it looked SO much better.