What are the most easily overlooked things about raising pigs in pig farms?

I worked in a local medium-sized pig farm for several years in the early 1990s. Here I want to talk about how to manage the pig farm environment. I don't know how your pig farm handles pig manure. If it is compost, it is easy to breed mosquitoes and flies. If it's really compost, it's best to plant some eucalyptus around it, because eucalyptus leaves have mosquito repellent components. Eucalyptus is a fast-growing economic tree species and has a wide range of uses after it is finished. It is best to build biogas digesters to treat pig manure, which is the most economical and hygienic and enjoys state subsidies. Some green belts can be built near the pigsty, and some Chinese herbal medicines and flowers with volatile smells, such as perilla, perilla, mint and jasmine, can be planted appropriately, which is pleasing to the eye and refreshing to smell. In the green belt, you can also plant some seasonal aromatic trees such as magnolia trees and osmanthus trees at a certain distance, which can make the pigs bloom all year round. Usually, the main thing is to do a good job of sanitation. It is necessary to dilute it to a certain amount with pesticides such as trichlorfon and dichlorvos on a regular basis and spray it around the pigsty to eliminate mosquitoes in the bud. The stagnant water ditches around pig farms and living areas should also be cleaned and filled up frequently to prevent mosquitoes from spawning and breeding. If possible, it is best to set up several curtains in the pigsty and cover the pigsty with a sunshade net as a net shed. This has several advantages, not only to block mosquitoes, but also to shade and cool down. This is mainly aimed at summer and early autumn when mosquitoes and flies fly in large numbers. As long as the management work is in place, there will naturally be fewer mosquitoes and flies in pig farms. What you think is the most important thing. Even if there are similar plants with mosquito repellent effect, it is actually not enough to achieve long-term mosquito repellent effect. But the environmental sanitation of pig farms still needs to do some greening work. It is all about health management to truly realize that people can enter pig farms without seeing mosquitoes and flies flying all over the sky. If you want to avoid mosquitoes and flies by planting some herbs or trees with certain mosquito repellent effect, you are simply making excuses for your laziness.