In 2012 salmon farming reached a worldwide production of over 2,100,000 MT.  However, growth of the industry is slowing.  Infestations with sea lice have emerged as a dominate factor limiting growth of the industry.  Initially, the first line of defence against sea lice was the use of veterinary medicines.  Multiple resistance, now present in several regions, exacerbates this situation. This presents a significant problem for farmers, veterinarians and the pharmaceutical.  Within this context, current sea lice management strategies are discussed by Dr Myron Roth Industry Specialist, Aquaculture & Seafood for the British Columbia Ministry of Agriculture in relation to current trends in the development of alternative control strategies that depend less on veterinary medicinal products.