Trust me, I was skeptical about this little tool as well. My dear friend, Chotsie LeFevre, gave me one when I had stopped by to visit one day. She said that her friend had made them and given her a bunch. Chotsie asked if I had ever used one and when I said I hadn't, she insisted that I take one to try. I couldn't imagine that it could work as well as Chotsie insisted it did. It didn't - it was BETTER!!!! After using it, I contacted the crafter and asked if she would sell them to me. They have lived on our countertop since then. Customers get weepy on the rare occasion we run out. You can use them safely on all surfaces. This is one of my most favorite things we sell.
You can wash them in the dishwasher or washing machine and they last for years.