Benefits of Salt for Cesspools Opening Pores and Improving Absorption: Salt helps break down solid deposits and accumulated salts on the walls and floor of the cesspool, which opens the soil pores and facilitates water absorption, especially in rocky or hard soils. Dissolving Fats and Greases: Salt works to break the molecular bonds of fats and oils accumulated in the drainage pipes and inside the cesspool, which prevents clogging and maintains smooth water flow. Eliminating Bad Odors: Salt absorbs and neutralizes unpleasant odors emanating from the accumulation of waste, and contributes to purifying the place from bacteria and fungi that cause these odors. Reducing the Need for Pumping: By improving absorption and dissolving deposits, salt reduces the rate at which the cesspool fills up, which extends the periods between frequent pumping (emptying) operations.