It is also called pyridophos. It is an organic phosphorus insecticide. It is a white or off-white crystalline powder with an offensive odor. It is slightly soluble in water and easily soluble in organic solvents such as methanol and dichloromethane. Used to kill blood-sucking insects such as flies in livestock and poultry houses. Exogenous fly traps are added to the preparation of this product, which has a trapping and killing effect on flies and can be used for spraying or coating. This product is a new type of organic phosphorus pesticide with high efficiency and low toxicity. It is mainly caused by stomach poison and has contact killing effect, killing flies, cockroaches, ants and adult insects. Because this type of adult insects have a habit of constantly licking food, drugs that work through stomach poisons work better. If combined with an inducer, it can increase the ability to induce flies by 2 to 3 times. When sprayed at the prescribed concentration, the reduction rate of flies can reach 84% to 97%. Pyridoxine also has a long residual period. It can be painted on cardboard, hung in the house or attached to the wall, the residual life can reach 10-12 weeks, and the residual life can be sprayed on the wall ceiling for 6-8 weeks. Almost all animals ingested azoxystrophos. Twelve hours after the goat was orally administered, the drug was excreted in 76% through urine, 5% from feces, and 0.5% in milk. Residues in tissues are low, 0.022 mg / kg for muscles, and 0.14 to 0.4 mg / kg for kidneys; hens take 5 mg / kg of medicated feed, the residual amount after 22 hours, blood is 0.1 mg / kg, and kidney is 0.6 mg / kg. It can be seen that the drug has very few residues in meat, fat, and eggs, and there is no need to specify a withdrawal period. In addition to adult flies, this product also has a good killing effect on cockroaches, ants, fleas and bed bugs. It is mainly used to kill adult flies in poultry houses, chicken houses, etc .; it is also used to kill flies and cockroaches in rooms, restaurants, food factories and other places.