Well, I went thru 3 or 4 bottles of the stuff earlier this year treating my horse that has a resistant infection in a head wound. I posted about him a while back. The Vetericyn did not do anything for him. But, another one of my horses had a nasty looking sore on his chin that I sprayed the Vetericyn on and it cleared it right up. One of my cats also had something....maybe ring worm, not sure but it was not healing and spreading, so I sprayed the vetericyn on that and it cleared up real quick too! So, I do think it is a good product. Unfortunatley did not help my horse, but that's a whole other story. Good luck with your lambs.