To prevent clogs and deodorize sink drains, look no further than a box of regular salt. Pour 1/2 cup salt (coarse salt works best) down the drain and then pour a tea kettle of very hot water after it. The salt will act as a corrosive to scrub the drain walls, and the hot water will help flush clogs down the drain while dissolving the salt. This process also naturally deodorizes, so any foul odors will be neutralized, leaving your drain clean and smelling fresher.
ANDREWS MCMEEL SYNDICATION