Advice please - how do you protect your bike from salt in winter? Especially brake discs.?

you would be far safer and your bike wouldn't rust so quickly if you did leave it inside but if you go to your local autoparts or whatever you have an get some aerosol brake cleaner just wouldnt advise using on paint etc. but if you clean your bike then put a really good coat of polish on it the mess wont stick as well to it. DONT POLISH YOUR DISCS