There are a lot of reasons to skip buying "pre-washed" lettuce in bags and boxes at the supermarket. Beyond the plastic waste, a tremendous amount of water is used to wash those leafy greens. Since there have been consumer concerns about the cleanliness of mixed greens, companies now "triple wash" greens using an extraordinary amount of water. The simplest thing is to skip bagged and boxed greens and go for whole heads instead. Simply soak in a bowl of water and use a salad spinner to remove the excess water.
ANDREWS MCMEEL SYNDICATION