Safe and secure way to store waste amalgam with unique mercury, vapor-lock chemical protection. Airtight snap-lid, polypropylene 20-fluid-oz container with foam-wrap insert that fits snugly inside circumference of receptacle. Wrap is impregnated with a formulation of nonhazardous chemicals that disables mercury vapor. Contains no hazardous ingredients. Virtually odorless. Can be used time after time during its 12-month life span.