I had posted about 18 months ago as to my dilema as to treat or leave alone my 20 yr old morab's sarcoids. She had a single one on her ear (looked like a fat feeding tick), to 3 in one year. I was alarmed how quickly they grew and became 3. Not many had experience here, and not many of my horse friends did either. There seemed to be a 50/50 on treat and maybe they go crazy and spread or leave alone. So we contacted 3 different vets ALL said treat. Eventually we went with a cut off (they were too big for chemo cream) vs freeze off. He did that because he took a margin of the ear without the sarcoids. So not that ear looks a bit thinner. But its been a bout a year and NO regrowth!!! I check all the time as vet said if I catch early they can use the chemo cream. SO there you have it. I hope this helps someone else in the future. While I do realize they may still come back, I am very optimistic, because I was told regrowth would happen fast if at all. Just wanted to update.