I think 2 nights ago my daughter's pee went in my iPad, it showed a FTL msg: nand and rw (OK),then the screen went black what to do.
I've seen suggestions with cell phones where people put them in a zip-lock bag with a bunch of rice. That draws out the moisture. Other than taking it in for repair, that's the best I can suggest.
I have done the rice thing, it does work. Try that first.
This question screams for a sarcastic remark, but I will refrain