hey guys! I picked up a block of Mainstay bars at the surplus store on the weekend. I've always wanted to try them and find out if it's something our family will like. (I don't stock up on food for the panty unless I know it's something we're going to eat.)

My question is - how long do they last once they're open? Are they individually wrapped inside the big block? Can I just reseal them n a zip lock bag?

Teach me, oh Wise Ones!