The dual-use nature of explosive precursor chemicals (EPCs) makes implementing counter-improvised explosive device (C-IED) measures complicated. These chemicals are misused to manufacture improvised explosives and their diversion poses a significant challenge to national and international efforts aimed at preventing the proliferation of IEDs. Many EPCs, however, are critical components in industrial, commercial, and agricultural work, and restrictions—if not considerate of stakeholders in legitimate supply chains—risk negatively impacting key industries.