In the past, many people have seen lice, but today they are rarely seen. About 30 or 40 years ago, lice were very common in people's eyes, especially in rural areas, and many people would have lice. Because lice were very common and infected very quickly, many people also used folk remedies to kill lice, such as shaving their hair or smearing various plant juices. There are three kinds of lice, one is head lice that grow on hair, the other is body lice that live on clothes and pubic lice that grow on pubic hair. The most common lice are head lice and body lice.

What was the reason that people at that time were so easy to breed lice and it was difficult to get rid of them completely? The generation of lice is mainly due to the poor sanitary environment. Thirty or forty years ago, people in rural areas had low requirements for hygiene, and their living conditions were often perfunctory about bathing first. Often, they hardly took a bath in winter, and only occasionally went to the river to wash in summer, let alone used soap to sterilize and kill insects. Moreover, children in rural areas often play around, such as rolling around in the lawn on the mountain, and a group of children catching insects in the grass. It is often difficult for children to pay attention to personal hygiene, and it is almost impossible for children who are playing hard to take time out to take a bath. Therefore, many rural boys often look bald, which can prevent the generation of head lice, but this is not a radical solution. In addition, rural families often raise livestock, such as pigs, cattle, sheep, etc., and also some cats and dogs. At that time, these animals were all for making money or guarding the home, and few people could notice their hygiene. In addition, children at home often get along with these animals, and there are not a few children who sleep with cats and dogs, which makes it easy to transmit lice from cats and dogs to people.

Nowadays, people seldom see lions, mainly because people's living conditions have changed greatly, and bathing is no longer a problem. Many people will take a bath every day, even in winter, and there are many bath products that can be sterilized, such as soap and shower gel. The living standards and sanitary habits are good, which greatly reduces the generation and spread of lice. At present, we also attach great importance to children's health education. Children wash their hands before eating, often wash clothes and take a bath, and they will not play in the mountains and grass, and they have no chance to get in touch with all kinds of livestock. Even pets at home will be regularly treated with insect repellent, often bathed and vaccinated regularly, which can almost cut off the generation of lice from the root.

I have to say that this kind of thing, lice, has become a memory of the older generation. At that time, the memory of sitting in the arms of parents and waiting for their parents to catch lice with a grate has become more and more distant.