Keep Bagged Salad Fresh Longer

Bagged salads are a real convenience, but are expensive and spoil easily. When they go on sale, I will buy one or two bags at most. I then put a paper towel in the bag to absorb excess moisture. I change the towel when it is damp. This keeps the salad fresh an extra day or two, and gives me the chance to use it up, rather than throw it out.