In the beginning (1999, to be precise), there was the Swiffer, and to legions of harried homemakers, it was good. Six years later, the disposable cleaning market is booming, and supermarket aisles are teeming with tossables — everything from treated wipes and sponges to high-tech dusting systems. All claim to be faster and easier than the products you’ve relied on for years, but often they require more of your hard-earned money. Real Simple pitted these rising-star disposables against their household-name counterparts, rating each for overall performance, time saved, and ease of use. (Environmental friendliness was not a deciding factor.) Here, when it pays to throw it away.