Mosquitoes have the habit of sucking blood. When sucking blood, they can inject plasmodium and Japanese encephalitis virus. Inject saliva into the human body to infect people. Therefore, mosquitoes not only affect people's rest, but also spread Japanese encephalitis, malaria, dengue fever and filariasis.
Flies breed and fly among garbage, cesspits, toilets, decaying animal carcasses, pus, phlegm and vomit, and feed on them. This fly carries tens of thousands of bacteria on its body surface and abdomen, and has the habit of eating, spitting and pulling. No matter where it flies, food will be contaminated by bacteria, viruses and eggs. When people eat contaminated food, intestinal infectious diseases may occur, such as dysentery, typhoid fever and polio.
Cockroaches often crawl around toilets and trash cans, sucking dirt, and their bodies are covered with bacteria, viruses and parasite eggs. They also like to eat human food and leftovers, polluting tableware and food, which may cause cholera, pneumonia, allergic dermatitis or rhinitis after eating.
The harm of rats is also amazing. It can spread dozens of diseases to people through parasitic fleas, urine and blood, including plague, epidemic hemorrhagic fever, leptospirosis and other harmful diseases. In addition, it will spoil food, destroy production and disturb people's lives.
In daily life, in addition to the "four pests", the most important thing is to pay attention to hygiene and create a clean and tidy living environment, such as cleaning up garbage in time and eliminating sanitary corners. You can also take protective measures such as installing screens and screens, and you can also take chemical spraying and fumigation in space.