In order to eliminate potential fire hazards, where should rags be stored?

Rags should be stored in metal containers to eliminate potential fire hazards. The primary concern with storing rags, especially those that have been used with flammable liquids, is that they can spontaneously ignite due to the heat generated by the oxidation of the residues left on the fabric. Metal containers provide a non-combustible environment that helps to prevent accidental ignition. They typically come with tight-fitting lids that can help contain any fumes and prevent the spread of fire should a spark occur.

In contrast, plastic containers can melt or burn in the presence of a fire, which would not provide a secure storage solution. Cardboard boxes are also flammable and would not protect against ignition, allowing heat or sparks to easily start a fire. Wooden cabinets pose a similar risk, as wood is combustible and can quickly contribute to the spread of flames. Thus, metal containers are the safest and most effective choice for storing potentially hazardous rags.