The word "four pests" is no stranger to people. Recently, cockroaches have also been listed as "four pests" and named as "new four pests". With the changes of the times, in addition to the "three pests"-flies, mosquitoes and mice, other "four pests" are also being updated.

In 1950s and 1960s, sparrows were once one of the "four evils" because they ate food and the whole people mobilized to besiege sparrows. Later, people realized that sparrows eat both pests and food, so they are not "harmful". Especially in recent years, people's awareness of environmental protection has gradually increased. Although sparrows are very common birds, people also know that they can't be killed casually.

Bedbugs have also been among the "four pests", that is, when people's living conditions are bad, the bad living environment becomes a "paradise" for bedbugs, lice and fleas, and bedbugs are most common in low and humid bungalows. With the improvement of people's living conditions and sanitary environment, there are more high-rise buildings. After renovation, bedbugs have nowhere to hide, so naturally they can no longer "harm people".

In recent years, people eat well and live well, which attracts new pests-cockroaches, which are called "rich insects" by research experts. Cockroaches were found in 65,438+000% five-star hotels and restaurants and 75% residents' homes. Cockroaches are everywhere now, almost ranking first among the "four pests". It is imperative to get rid of this "harm".