Did you know liquid laundry detergents have a shelf life? The ingredients in liquid laundry detergents, like whitening agents, break down over time and become less effective in getting your clothes clean. Do this one thing: Switch to powdered laundry detergents, which last longer and are more shelf stable. If you’ve stopped using powdered detergents because they cake up and clog your washing machine, try dissolving it in a hot water ahead of time. Simply fill a pitcher with hot tap water and add the recommended amount of powdered detergent. You'll have all the eco-benefits of powdered and the convenience of liquid.