Shelf life...dont know about that one.

I thought that youd only have to refrigerate it to reduce oil seperation?? Ive kept Smuckers Natural in the cupboard for 10 days with no ill effects.

Ive done this cuz with the Smuckers Ive found it tedious to get all the oil stirred up so I just stir as I eat it, rather than have parts of it dry and parts oily all refrigerated up lol.

So...if you go through your peanut butter quickly ...I dont see it harmful to just kept a bottle at your desk provided that its keep out of heat.

C.