Tough Hand Cleaner 1/4 cup grated naphtha soap ends 2 tablespoons mason's sand or pumice 1 cup water Place soap and water in a saucepan. Place over low heat; stir until soap is melted. After mixture cools, add mason's sand or pumice. Store in a cottage cheese container or margarine tub. To use, dip fingers into soap mixture and lather hands. Rinse well. This works well on greasy tools, also. Be sure to rinse and dry tools thoroughly.