a sponge product for cleaning a work surface includes an open - cell melamine foam body layer having a front wall , rear wall , first sidewall or second sidewall that is inclined and at an acute angle relative to the upper surface of the body layer . an abrasive layer is adjacent the upper surface of the melamine foam body layer forming a unitary product . the abrasive layer has at least one of the front wall , rear wall , first sidewall or second sidewall forming an obtuse angle with the lower surface of the abrasive layer , and the abrasive layer upper surface and at least one front wall , rear wall , first sidewall or second sidewall forms a working edge having an acute angle , and the working edge remains flat against the work surface when a force is applied to the sponge product .