1. Bamboo and wood products should be replaced every six months. Bamboo or wooden tableware is very healthy, so many people will choose it, but such tableware is easy to breed bacteria, and if it is not disinfected often, it may cause intestinal diseases. The service life of bamboo and wood tableware is six months to one year. It is best to disinfect household chopsticks once a week. Boil the cleaned chopsticks in boiling water for 30 minutes or sterilize them in microwave oven for 2-3 minutes. Bamboo and wood chopsticks will be used for a long time, and the end color will become darker. Some families fry food with chopsticks, and the ends of chopsticks will carbonize and turn black. The strength of such chopsticks becomes worse, and it is easy to mold, drop slag, and shelter evil people from evil practices. Some "painted chopsticks" contain heavy metals such as lead and chromium. There is even the risk of heavy metal poisoning and cancer after frying. Therefore, once chopsticks are cracked, deformed and discolored, they can no longer be used.

2. Plastic products are changed once a year. Traditional Chinese medicine health experts remind that plastic products on the market are light in weight and not easy to break, which is a kind of tableware that many people will choose. In fact, the essence of plastic is that it is easy to become brittle and aging after a long time, and harmful small molecules are easy to precipitate and become dangerous molecules that induce cancer. If the plastic tableware is found to have scratches, the original smooth surface becomes rough, or it has a pungent "plastic smell", even if it is used for less than one year, it should be replaced in time.

3. If the coating of metal products is damaged, it should be replaced. Most people think that metal products will be safer. In fact, taking an iron pot as an example, once the "oil layer" on the surface of the iron pot to protect it from rust falls off, the rust in the pot will easily cause nausea, vomiting, diarrhea, loss of appetite and so on. Enamel products are prone to cracks, and substances such as aluminum silicate wrapped outside enamel products will be transferred to food. Stainless steel is made of Fe-Cr alloy mixed with metals such as nickel and molybdenum, and some of these metals are harmful to human body. Therefore, when metal kitchenware is found to have scratches or the surface paint or coating falls off, it should be replaced in time.

4. If there are cracks in ceramic products, they should be replaced immediately. Many people must like to see beautiful ceramic utensils, but the products made of this material are prone to cracks, and the lead inside may overflow and mix into food. Therefore, cracked ceramic tableware should not be used again. The service life of tableware is inseparable from its maintenance. For ceramics, metals and other kitchen utensils, we can extend their service life through careful maintenance. However, in the event of cracking, deformation, porcelain removal and other phenomena, it should be replaced in time. Don't "waste" precious life for a temporary "saving".