Take a few seconds to clear out the clutter in your medicine cabinet. If you haven't used a product in months, start using it or wash the container out and recycle the packaging. Outdated prescription medicine should never be flushed down the toilet because it can contaminate the water supply. Instead, mix the medicine with used coffee grounds and put everything -- the medicine and packaging -- in a plastic bag and toss into the trash. If you have any questions, ask your pharmacist.