Hi there, what type of substrate was she on, any type of soil ? When you soaked him did you use a toothbrush or something similar ? Sometimes caked on feces can be difficult to get off. If you try again with a toothbrush and it still doesn't come off at all then get an antifungal cream like Lamisil or Monistat from a pharmacy to put on it, you don't need a prescription for it.