Knitted dish cloths became "the thing" in the Korean community a couple years ago, because it's sturdy enough to take away grime, and yet it keeps away bacteria... I heard the yarn used for making this cloth is made of some special material that keeps bateria away. We use it at our house.. it's good because unlike sponges, they dry very quickly, so it's bound to keep away mold and bacteria much better than a sponge... it looks prettier too~