I've been having some in a small spray bottle in my shooting box for 6 months or more. I also put the spray bottle in 2 plastic sandwich bags just in case and I keep it standing in the corner of the box. So far no problem. :!:
I made a batch of 7:1 water/ballistol for patch lubing and cleaning about 4 yrs ago and it looks like I just mixed it yesterday. I keep a small plastic bottle that had eye drops in it full of 100% ballistol for general lube purposes, both of these live in my shooting bag and show no signs of deterioration at all. It's good stuff. :yeah: