The black Utopia Towels Wash Cloths, for whatever their use, immediately expose whatever filth they might pick up which is of any color not black. There are an infinite number of uses for this product. Use your imagination. I dust the desk of my computer station with a black cloth, which is more efficient than using a feather duster. The Utopia Towels Wash Cloths do come in handy as hot pads around the stove, and in mopping up Wagh Bakri tea stains after a modest scrubbing with a sponge carrying a modicum of Chandrika ayurvedic bar soap. Using up to 24 "rags" per day for everything that cleanliness demands, will save money for those who would ordinarily employ paper towels for said purposes.