Which action is strongly cautioned against during *C. molossus* bite first aid?

Applying a tourniquet or attempting to suck out the venom

Established emergency protocols for rattlesnake bites emphatically warn against employing archaic and potentially damaging interventions. Specifically, measures such as attempting to create a tourniquet to restrict blood flow entirely, cutting into the wound site, or physically sucking out the venom are strongly advised against. These actions are known to often cause more localized harm to the patient—such as increasing tissue damage or introducing secondary infection—than the direct effects of the venom itself. The correct immediate steps prioritize staying calm, immobilizing the limb below the heart, and proceeding directly to professional medical care for management of systemic effects.