No one Nose

Really, is the nose picking so important that nothing stops it? I've tried taking away toys, bandaids to keep her fingers out, I've tried telling her how disgusting it is, telling her she has to get a tissue if she does it, that she has to do it in the bathroom. NOTHING is working. It's truly gross and I can't make it stop no matter what I try. I'm truly at the end of my rope regarding her nose. She's even picked it to the point of giving herself a bloody nose and nothing has made one single shred of difference. I don't even know what to say anymore. It grosses me out that she does it, but more so because I later find whatever she found up there, wiped in random places. Any ideas?