I was reading up on how filthy a pacifier can get. be sure to wash and take care of your babies pacifies. You would be amazed at how many germs that can get on them. Be sure to wash them and boil them and just get rid of them and replace them. Personally, I think that pacifiers should not be used more than 3 months. They are relativiely cheap so just replace them. It is healthier in the long run I think.