Can Marine Ich stay alive on dry goods?

[mandyplo]

I have a quarantine tank in my basement where I keep separate tools from my display tank (nets, those granny grabber tools, whatever else... filters heaters etc.)
My dad unknowingly used the QT tank grabber in my display tank to save a fallen coral off the sand bed.
+1 dad for saving my coral
-1 dad for putting ICH back into my display tank as it has all of a sudden shown up about 4-6 weeks approx. after my dad used the tool in my display.
I'm sure the pesty parasite can stay dormant in dry conditions... I'm sure thats how ich got in my display... I quarantine all fish I get, and I haven't obtained ANY new fish, corals, rock or ANYTHING in 4 months....
I have no explanation for it. So discouraging

So I'm going to take all of my fish out and put them back into treatment in quarantine in the basement, and leave my display tank without fish... How long do I need to leave my display without fish until the parasite eventually dies off?
And, can I treat my dry products with anything to kill the ICH before I put them in my tank? Like vinegar or something?... Or should I just keep separating dry goods from QT to Display and educating my family to not mix up the tools....
Thanks guys.... such a PITA