I have battled MRSA in the nose for a long time and once again am on an antibiotic and a nasal ointment. I use Nasonex. How do I clean the nozzle so that I can be sure there is no bacteria on it after I use it? I'm thinking to use one bottle on the left and another for the right. But I want to clean it right. Most people just wipe it. Is that enough? Thanks for any help.