Lime Sulfur Is There A Chance That Lime Sulfur Wouldn't Work On My Cat?

Is there a chance that lime sulfur wouldn't work on my cat? - lime sulfur

I have this material for about 8 weeks without any change in my cat ring worm gets worse and worse so bad that I cry when I see, I had the vet 15 times, because it is only me more drugs. Someone does not know what else I can do to save my cat? I do not suffer.