I have a wart under my thumbnail and on my middle finger. I also have one on my left knee and two on my right knee. One on my right knee turned black and then kinda disappeared.. when I rub my knees, I can't feel it, but when I look at my knee I can tell it's still there. I can never wear shorts because I'm scared of what people will say. What is a FAST and effective way to get rid of them? :-(