how do investigators package dangerous sharp items

Investigators package dangerous sharp items using rigid, puncture-resistant, and leak-proof containers to ensure safety and containment. Knives may be immobilized and secured in non-airtight cardboard boxes or specifically designed knife boxes, often sealed in plastic bags. Sharp objects such as glass, razor blades, or needles must be placed in containers that prevent the sharp points from protruding, and external packaging should be labeled with warnings like "CONTAINS SHARPS" and biohazard symbols if appropriate. Air holes in outer containers may be provided when DNA analysis is required to preserve evidence.