1. Preheat the oven to 350 degrees Fahrenheit.
  2. Pour a layer of baking soda on the bottom of the sink.
  3. Pour a layer of vinegar on top of the baking soda and vinegar.
  4. Pour a layer of water over the vinegar and water.
  5. Add enough soap to cover the entire sink and stir until all ingredients are mixed together. Pour mixture into the sink and bake in preheated oven for 10 minutes, or until bubbly and clean!