Do you use mouthwash on a regular basis and feel weird spitting it down the drain? Take advantage of the disinfecting properties of the mouthwash and do this instead: Spit it out into the toilet. Let it sit in the water for about 30 minutes and then flush. The disinfecting properties will neutralize germs and leave a fresh, minty smell, too. If you want maximum cleaning power, pour 1/4-cup mouthwash into the toilet and swish it around with a brush. But if you're already using it, why not let the mouthwash pull double-duty?