I have a few alkaline left that I'm currently using up. I had a terrible fail of C size batteries recently. I have a camp lantern that takes 8 C size batteries. I always remove the batteries when not in use. I was cleaning up some of my camping gear and restocking some items when I say the container of batteries
. All ( 16 ) but 2 were leaking and oozing.
This is not an isolated case with this type occurrence. Sure I've gone years without a mishap but once in my book is enough to be cautious. I always take out alkaline when I know I'll not use the item for a while.