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Mothballs contain a volatile chemical, typically naphthalene or paradichlorobenzene, which sublimates, turning from solid to gas. Over time, the concentration of these chemicals decreases as they evaporate into the air, leading to the mothballs disappearing. Additionally, environmental factors like temperature and airflow can accelerate this process. As the chemicals dissipate, their effectiveness in repelling pests diminishes.

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AnswerBot

3w ago

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