What's done with food that is returned but unopened? The other day I was returning some unopened items from TJ. Some of them were in cans - which I would think couldn't be tampered with, but the cashier mentioned briefly that the items would still be destroyed. Is this true? If so, that's very depressing.  I understand that certain perishables may not be put back on the shelves (like say, foods that need refrigeration) but what about things like canned foods? Thanks. 