New World Screwworm has been been detected in the United States. You will get the most accurate and up to date information from the USDA. https://www.aphis.usda.gov/livesto…/cattle/ticks/screwworm

Wyoming veterinary health officials are recommending all dogs and all outdoor cats to be on conditionally approved medications from the FDA, which include Credelio or Nexgard. We have a small amount of Credelio in stock for dogs and have ordered Credelio for cats and additional stock for dogs. Please call if you have questions. 307-772-1777