They are spraying 84 Disinfectant which is sodium hypochlorite (NaClO), which may produce chlorine a highly toxic gas. Not killing the virus, but the carrier (people) Incorrect use of disinfectant may not only kill bacteria but also endanger life 84 can disinfectant be anything disinfected? Speaking of disinfectant, 84 disinfectant is used in most peoples houses nowadays. It is a chlorine disinfectant with sodium hypochlorite as the main component. It is mainly used for disinfecting the surfaces of various objects and the environment. The hypochlorite produced by sodium hypochlorite in aqueous solution can decompose new ecological oxygen, which has strong oxidizability and can oxidize the nucleic acid substance of the virus, thus killing the virus. Because 84 disinfectant is cheap and easy to use, it has become a necessary cleaning artifact for many people. Especially after the emergence of the new coronavirus, out of the sense of crisis, many people would like to use 84 disinfectant to disinfect all corners of the home. It is better to disinfect all the clothes and fruits they wear. But household gentleman wants to tell everybody, 84 disinfectant is not omnipotent. Even after a large amount of dilution, some items cannot be disinfected with it, such as silk, wool, nylon, leather and some paint surfaces. If 84 disinfectant is used for disinfection, it is likely to cause damage to it, so we must pay attention to it. So in fact, wood furniture and leather furniture are not suitable for disinfection with 84 disinfectant, because the surface of wood furniture is mostly covered with a layer of paint. If the paint is corroded, it will not only affect the appearance of furniture, but also shorten its service life. Different disinfection methods are different Many people may know to dilute the disinfectant when using it, but as for the proportion of dilution, many people may not know. Generally speaking, the dilution concentration of 84 disinfectant is 2 to 5 parts per thousand, i.e. put 2 to 5 ml 84 disinfectant in 1000 ml water. Soak for 10 to 30 minutes. All the sterilized articles should be immersed in water, and they can only be used after being washed with clear water. If it is to disinfect the space, it is enough to use 50 grams of disinfectant every 200 square meters. Of course, it should also be diluted before spraying. However, 84 disinfectant of different brands will also differ in the dilution ratio, so its better to check the dilution ratio indicated on the package of disinfectant before use. What should be paid attention to when using 84 disinfectant? Because the disinfectant has certain corrosiveness, it must wear rubber gloves for protection when mixing to avoid contact with the skin. Use with care to avoid violent shaking. Its better to wear a mask, avoid nose and mouth, and prevent splashing into eyes. And use disinfect water to clean inside 30 minutes, must wipe it with clear water in time, had better wipe several times more. If accidentally splashed on the skin, be sure to wash immediately with a large amount of flowing water. And when we use the 84 disinfectant, it is best to put the diluted disinfectant in the spray bottle and spray it out. Where it is inconvenient to spray, it can also be wiped with a cloth. Unless strong cleaning is required, it is better not to pour the disinfectant directly on the surface of the object. In addition, the disinfectant should be prepared and used now, and should not be used after being placed too long. And we should remember that disinfectant should not be mixed with toilet cleaner, alcohol, etc. and should not be stored together, otherwise it may have very serious consequences. Because the main component of 84 disinfectant is sodium hypochlorite (NaClO), which may produce chlorine when mixed with jiefenling or alcohol. Chlorine is a highly toxic gas, which is easy to infect the respiratory tract and lungs after inhalation, leading to bronchitis and pulmonary edema, edema of the respiratory mucosa, massive secretion of mucus, resulting in dyspnea. Inhalation over the sea can cause cardiac arrest. There was a news before that Ms. Wang, who lives in Beijing, poured the toilet cleaner and 84 disinfectant into the toilet when cleaning the toilet. She fainted after cleaning for some time and was sent to the hospital for rescue. So do you see that if the disinfectant is not used properly, it may cause life hazards. https://www.jqknews.com/news/377793-Incorrect_use_of_disinfectant_may_not_only_kill_bacteria_but_also_endanger_life.html https://twitter.com/pdchina/status/1226902394765746176?s=21