mothball

Mothballs are those small, pungent balls your grandparents probably used to keep clothes safe from moths while storing them away for the season. They smell... distinctive. Usually made with naphthalene or paradichlorobenzene, they slowly release a gas that kills moth larvae and other fabric pests. While they can work well, their strong odor can stay in clothes for a long time, so many people now prefer other storage methods.

The word "mothball" also has a common figurative meaning. If something is mothballed, it has been put aside or stopped for now, but not thrown away for good. A factory, ship, or project can be mothballed with the idea that it may be used again later. It suggests careful storage and delay, not final abandonment.

Mothballs are solid spheres of chemical pesticide and deodorant, traditionally used when storing wool clothing and other natural textiles. They work through sublimation—slowly turning from a solid into a toxic gas (historically naphthalene or paradichlorobenzene) that kills clothes moths, carpet beetles, and their larvae. In a literal sense, you would toss a handful into closets, cedar chests, or garment bags before packing away seasonal items.

However, mothballs come with significant drawbacks. Their sharp, unmistakable odor can permeate fabrics and wood, making it difficult to remove. Furthermore, the chemicals are considered potentially hazardous to human health and the environment if handled improperly. Because of these concerns, their use has declined, with many people opting for airtight containers, freezing, or cedar chips instead.

Beyond the laundry room, "mothball" is frequently used as a verb in professional and political contexts. To "mothball" something means to temporarily suspend an operation or project while maintaining the equipment or framework so it can be reactivated in the future. For instance, a factory or a naval ship might be "mothballed" during an economic downturn or a period of peace. It implies a strategic pause and preservation rather than permanent disposal or abandonment.

Whether you are catching a whiff of a vintage closet or reading about a government program being put on hold, "mothball" evokes a sense of preservation, temporary suspension, and a specific brand of old-fashioned practicality.