When walking into Whole Foods our first stop is customer service. We return all of our empty milk glass bottles, get our $2 deposit back then get our "wet" jars weighed. It is not a hassle and does not add more than a few minutes to our shopping trip.
We use stainless steel sandwich tins for our deli meat and cheese. We ask them not to wrap in paper or plastic and to place in our tins. Then we move on to the olive bar to get fresh roasted red peppers and olives. Last, we go to the salad bar to get fresh Parmesan and feta cheese.
Storing this way eliminates the moldy food that you forgot about in the back of the fridge scenario. It is also less expensive, no waste and since it is so fresh the taste is a lot better.