Animals, plants and insects in the world all have biological chains. Everything has its vanquisher. Flies and mosquitoes also have their natural enemies. Flies and mosquitoes naturally become the food of their natural enemies. Flies and mosquitoes are all abnormal insects. Its larvae can be used as feed for raising fish and chickens, such as artificially bred sterile flies. As long as the temperature reaches 25℃-30℃, the relative humidity reaches 50%-7 1%, and there is a certain amount of light every day, it can breed for 24 generations a year, and each fly lays 200-300 eggs at a time. According to the analysis of relevant data, aseptic fly maggots contain 0% crude protein, about 10% fat and amino acids. It's high-grade chicken feed.

In the south, there is a dish called granulation dish. The method is to mix the meat with the necessary seasoning and hang it. When maggots gain weight, they fall into the pockets hanging under the meat, which is called granulation vegetables. Mosquitoes are just too small, and larvae can still raise fish.