Salt (especially coarse or rock salt) is a natural, economical, and safe solution for clearing cesspools and sewers, as it works to break down fats, dissolve deposits, and get rid of unpleasant odors and fungi without damaging the pipes. Salt effectively contributes to improving drainage by opening pores, and is often used. Clean natural salt, 50 lb bag for all uses, livestock salt and salt for cesspools. There is also oven salt and salt for fish.