Do you use mouthwash every morning? Here's a simple trick to get double-duty from your morning gargle. When you fill a cup with mouthwash, leave a little behind after you sip. Then place your toothbrush in the cup for about 15 to 20 minutes. The disinfecting properties of the mouthwash will sanitize your toothbrush. When you're done with that, dump the residual mouthwash into the toilet; it will also sanitize your toilet bowl. And don't forget to recycle your old mouthwash bottle (with the cap on!) in your curbside recycling when it's empty.