Disposable chopsticks are extremely unhygienic and should not be used again directly. 

What about household chopsticks? 

Recently, a message "inquiring that chopsticks may be used for more than 3 months may induce liver cancer" has attracted wide attention. 

Many citizens use a pair of chopsticks in their homes for several years. Experts suggest that wooden chopsticks will multiply after they have been used for a long time, and they will probably be replaced as often as toothbrushes. 

Studies have found that disposable chopsticks for extended use can breed a variety of mild ones that can cause infectious diarrhea, vomiting and other diseases. 

Severely moldy chopsticks will breed aflatoxin. 

The substance is classified as a class of carcinogens by the World Health arrangement, which has a destructive effect on human and animal liver arrangements, and has been widely determined to induce liver cancer. 

When ordinary chopsticks are used for 3-6 months, the color will become darker or lighter with the frequency of use. 

Due to the long accumulation of bacteria, Aspergillus flavus can reproduce Aspergillus flavus, accompanied by changes in the properties of the raw materials. 

When the appearance of long-used chopsticks is mottled or moldy, it means that the chopsticks are now moldy and can not be used continuously. 

Under normal circumstances, after washing the chopsticks, put them into the chopstick box to drain naturally, but it will inevitably accumulate moisture, and aflatoxin is heat-resistant. 

Moreover, the cooking temperature in ordinary days is difficult to achieve complete sterilization. 

Experts suggest that after boiling chopsticks in boiling water for half an hour every week, put them in the air for exposure to the sun and then use them again, which is still effective in disinfection. 

In addition, the longer the use of chopsticks, the more the cross-section is detected, and the frequency of replacing chopsticks is half a year. 

Perhaps choose bamboo chopsticks or wood chopsticks coated with raw lacquer. These chopsticks are less likely to reproduce after they are clean and clean. Together, these chopsticks are not suitable for use in high temperature conditions to prevent the excretion of harmful substances.