06/10/2026
Here are some approved sprays for New World Screwworm
In cattle/small ruminants we can use these as well or Dectomax injectable has been conditionally licensed
Several pesticides are currently registered by the Environmental Protection Agency for use against screwworm. Examples of approved equine-labeled products and their active ingredient include the following listed on the graphic. For a full list of approved products and their associated species, visit:https://www.aphis.usda.gov/sites/default/files/pesticides-for-nws.pdf
An example of an approved product for the outside surfaces of buildings and perimeter treatment is EP152 EW Insecticide (Environmental Science US LLC) with active ingredient Zeta-Cypermethrin. Additionally, DeltaGard Fly Insecticide products (Environmental Science US LLC) with active ingredient Deltamethrin is approved for this use.
The AAEP has also published New World Screwworm Infestation (Disease) Guidelines. View this resource here: https://aaep.org/resource/aaep-infectious-disease-guidelines-new-world-screwworm/