The importance of the dry period in mastitis epidemiology has been a key area of both mastitis research and clinical interest in recent years. It is also an area, which has seen the development of new and innovative products and approaches to monitoring and managing udder health. Unfortunately as with the development of any new strategies and products, the approach often becomes ‘clouded’ by previous misconceptions and misunderstandings of the latest research. The aim of this article is to outline the latest thinking in dry period udder health management and to dispel some of those ‘persistent’ myths.