Salt tends to have mildly abrasive and antiseptic properties that can be an excellent way to clean your pipes. However, many plumbers recommend salt as a cleaner when mixed with other elements like vinegar or baking soda. For example, you can mix equal parts salt and vinegar or salt and baking soda (usually ½ cup to one cup of each). Then, pour the mixture down your drain and let it sit for about 15 to 30 minutes. Finally, flush the drain with about 4 to 6 cups of boiling water.