Warning to all first responders, including Law Enforcement and canine officers - Dermal and mucosal exposure is significant. Carfentanil has not been found in WI yet. When large vet anesthesiologists handle this, always in small quantities, they have emergency providers standing by with a box of Narcan. Any accidental exposure requires presumptive treatment, even without any symptoms, of 2mg IM every 3 minutes until an IV can be established and they get to the ED. Read more on the recent DEA warning.