It does take some effort, but if you tear up your greens into bite-size pieces, wash them in a bowl of cold water, spin them dry (a salad spinner or I have heard you can put them in a clean pillowcase, take it outside, and swing it around!), and put them in a plastic bag with a paper towel, the paper towel seems to maintain just the right amount of moisture and the greens stay good for a week. It's a pain to do, but it's worth that effort to be able to just grab lettuce ready to go. I have a salad spinner with a crank on top - crank it up and let it go, shake it to drop water out and mix up the lettuce, crank it again and it's mostly dry. I have had it many years - cost $7 and I got my money's worth, especially when getting farm shares and too much lettuce.