Except for what I am using mine just stays in the chest type deep freezer in the basement.For me it really is about storage space. I keep mine in litres (fits nicely in the door of my freezer) then when I open one I decant to 4x250 then when I need to open a 250 I decant to 5x50 four one of which stay in the freezer and one in the meat tray in my fridge. We don't have children so we can be a bit more blasé about what we have where.
I do know of people who have a locked small fridge/freezer just for their eliquids.
No lock but no kids around either.