Simply pour about 1/2 cup of baking soda into a bowl, and add enough liquid detergent to make a texture like frosting. Scoop the mixture onto a sponge, and wash the surface. This is the perfect recipe for cleaning the bathtub because it rinses easily and doesn’t leave grit.
Note: Add 1 teaspoon of vegetable glycerin to the mixture and store in a sealed glass jar, to keep the product moist. Otherwise just make as much as you need at a time.