Somewhere between five and 20 percent of people in the U.S. will come down with the flu this year. If that doesn’t make you want to reach for the hand sanitizer, then we don’t know what will. But it can take more than keeping hands clean. Cleansing the nasal passages also relieves congestion and the swelling that can harbor bacteria or infection. The new SinuCleanse Micro-Filtered Nasal Wash System clears tap water of any microorganisms and then rinses out nasal passages safely with a gentle flush.