I hear what your saying guys and I've done a bit of research as well. It appears you have to kill the fungus first or it will come back again quickly. And then you have to try to remove the dead fungi which can hang on quite tenaciously. I'm going to have a bit of a chat to the local camera repair shop as well. If i find out anything definate or if there is an industry standard I'll make sure I post it here.
I wish it did just wash off Phil.
