BLOC® is a patented handheld hazardous powder containment device designed to rapidly stabilize and contain suspicious powders, synthetic opioids, and other hazardous particulate substances during initial field encounters. Deploying in seconds, BLOC helps reduce the risk of secondary exposure and cross-contamination while providing responders with a simple means of securing a potentially hazardous scene. Certification training is delivered through an online Learning Management System (LMS) and can typically be completed in less than 30 minutes. BLOC does not interfere with subsequent field testing, analytical identification, evidence collection, or laboratory analysis of unknown substances. The device is safe for deployment directly against the skin and is approved for use aboard commercial aircraft. Currently utilized by law enforcement agencies, first responders, and Departments of Corrections in seven states, BLOC serves as a frontline stabilization and containment tool that supports safer response operations while preserving options for subsequent investigative and analytical procedures.