Mr. Clean Magic Eraser is such a wonderful product. I am the Mother of a three-year old and she draws her beautiful pictures on everything including the walls, cabinets, etc. I have seen this product on the commercials but I was always a skeptic. I decided to buy it one day when I was at Lowes since it wasn't expensive for a four pack. As soon as I got home I tried it out, and let me just say it was surprising how fast it work to erase all the crayon, marker, smudge marks on my walls cabinets and refrigerator. I a truly amazed by this product and how it just lifted all the marks away in an instant. On some of the tougher stuff such as month old marker it took a little elbow but it still came off. Also keep in mind that you might need a paper towel since it is wet, it to drip a little but other than that I don't have any negative comments for this product. I was also amazed on how I only had to use one of the erasers for all the marks and believe me I had a lot. I always thought they would work but probably for a short time but I am truly happy I bought this product because I was completely wrong. I truly believe that if you buy this product you will be very satisfied and really get your moneys worth.