Family who are hard on phones and don’t seem to understand that snow becomes water when it melts.
“Well it was fine for a while afterwards…” Yeah, until the ion migration of the metal in the balls corroded the hell out of the PCB and now it’s acting like a resistor instead of an insulator. And it’s not like I can get a brush under a BGA to scrub that off. And anything I could use chemically to clean it will only make things worse.
Sorry, family, you need to be more careful or buy more new phones.
Edtied to add: I didn’t always use sillica gel. I used to use calcium chloride. I think that’s what it was. It’s the stuff they sell to keep closets dry, etc. It’s now well labeled as to what it is, but it looks like calcium chloride and it was cheap. 
But it’s messy as the hydrate form is a liquid.
