First of all, you can report the behavior of betel nut sellers to the local market supervision department and provide relevant evidence for the supervision department to check and handle. In addition, consumers can safeguard their rights and interests through consumer associations and other organizations, and safeguard their rights and interests through legal means, such as asking merchants to return goods and compensate for themselves. In the process of shopping, consumers should also be vigilant and carefully check the freshness and shelf life of goods to avoid adverse effects on themselves.