Lettuce and other non-kale leafy greens typically go bad the quickest of all the veggies we get. A tip to help greens last a long as possible; if you notice any that are starting to look a little less than great, get rid of those leaves right away. As some start to deuterate, they will cause other go quicker. We also like to crack the container open in the refrigerator, if we notice a lot of condensation as too much moisture in the container will also cause it to go bad quickly.